66638 (number)
66,638 (sixtysix thousand six hundred thirtyeight) is an even fivedigits composite number following 66637 and preceding 66639. In scientific notation, it is written as 6.6638 × 10^{4}. The sum of its digits is 29. It has a total of 4 prime factors and 16 positive divisors. There are 27,840 positive integers (up to 66638) that are relatively prime to 66638.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 5
 Sum of Digits 29
 Digital Root 2
Name
Short name  66 thousand 638 

Full name  sixtysix thousand six hundred thirtyeight 
Notation
Scientific notation  6.6638 × 10^{4} 

Engineering notation  66.638 × 10^{3} 
Prime Factorization of 66638
Prime Factorization 2 × 11 × 13 × 233
Composite numberω(n)  Distinct Factors  4  Total number of distinct prime factors 

Ω(n)  Total Factors  4  Total number of prime factors 
rad(n)  Radical  66638  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 66,638 is 2 × 11 × 13 × 233. Since it has a total of 4 prime factors, 66,638 is a composite number.
Divisors of 66638
16 divisors
τ(n)  Total Divisors  16  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  117936  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  51298  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  7371  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  258.14337101696  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  9.0405643738977  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 66,638 can be divided by 16 positive divisors (out of which 8 are even, and 8 are odd). The sum of these divisors (counting 66,638) is 117,936, the average is 7,371.
Other Arithmetic Functions (n = 66638)
φ(n)  Euler Totient  27840  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  3480  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 6642  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 27,840 positive integers (less than 66,638) that are coprime with 66,638. And there are approximately 6,642 prime numbers less than or equal to 66,638.
Divisibility of 66638
m  2  3  4  5  6  7  8  9 

n mod m  0  2  2  3  2  5  6  2 
The number 66,638 is divisible by 2.
Classification of 66638
By Arithmetic functions
 Arithmetic
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Base conversion (66638)
Base  System  Value 

2  Binary  10000010001001110 
3  Ternary  10101102002 
4  Quaternary  100101032 
5  Quinary  4113023 
6  Senary  1232302 
8  Octal  202116 
10  Decimal  66638 
12  Duodecimal  32692 
16  Hexadecimal  1044e 
20  Vigesimal  86bi 
36  Base36  1ff2 
Basic calculations (n = 66638)
Multiplication
n×yn×2  133276 

n×3  199914 
n×4  266552 
n×5  333190 
Division
n÷yn÷2  33319.000 

n÷3  22212.666 
n÷4  16659.500 
n÷5  13327.600 
Exponentiation
n^{y}n^{2}  4440623044 

n^{3}  295914238406072 
n^{4}  19719133018903825936 
n^{5}  1314043586113713152723168 
Nth Root
^{y}√n^{2}√n  258.14337101696 

^{3}√n  40.54220058868 
^{4}√n  16.066840729184 
^{5}√n  9.22028596558 
66638 as geometric shapes
Circle
Radius = nDiameter  133276 

Circumference  418698.90249983 
Area  13950628732.392 
Sphere
Radius = nVolume  1.2395226632922E+15 

Surface area  55802514929.568 
Circumference  418698.90249983 
Square
Length = nPerimeter  266552 

Area  4440623044 
Diagonal  94240.363369418 
Cube
Length = nSurface area  26643738264 

Volume  295914238406072 
Space diagonal  115420.40171477 
Equilateral Triangle
Length = nPerimeter  199914 

Area  1922846182.3673 
Altitude  57710.200857387 
Triangular Pyramid
Length = nSurface area  7691384729.4692 

Volume  34873827437764 
Height  54409.699159862 
Cryptographic Hash Functions
md5  31004b7fdea7ac1ea7373178b1fee457 

sha1  b9b200d6c53fa292ba48dc63b67c0be8ecf02670 
sha256  5efc566fbab89628a635eec8143764561153b72c31acd58d3402f3d0a2f9febf 
sha512  5b4504c1c69a25421bb94ba2bf183ca0c49203f75ff9f83d5ffaa1e7a71c4f6e3e8e7e0279e02e019085930d5d99aaeaa9cea836a342bf490e6aab6141d3ce1e 
ripemd160  182c434e43006d47bc6bfa843b62a3bb71829e1f 