10690
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 19260
- Proper Divisor Sum (Aliquot Sum)
- 8570
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4272
- Möbius Function
- -1
- Radical
- 10690
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 161
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- a(n) = floor( n*(n-1)*(n-2)/11 ).at n=50A011893
- Number of ordered 5-tuples of integers from [ 2,n ] with no global factor.at n=14A015651
- Numbers k such that the continued fraction for sqrt(k) has period 45.at n=26A020384
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 22.at n=3A031610
- Binomial transform of A000029.at n=10A054192
- a(0)=1. a(n) = a(n-1) + (sum of the earlier terms {among terms a(0) through a(n-1)} which are coprime to n).at n=15A127076
- Number of bits in A127962(n).at n=25A127965
- Collatz (or 3x+1) trajectory starting at 703.at n=9A161021
- Potential magic constants of 8 X 8 magic squares composed of consecutive primes.at n=26A189188
- Number of (w,x,y) with all terms in {0,...,n} and w<x+y and x<y.at n=29A212980
- Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..1 2 X n array.at n=9A218065
- Number of length-n binary sequences where the sum of each subblock differs by at most 2 from every other subblock of the same length.at n=15A274005
- Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = determinant.at n=50A280588
- Numbers k such that 2*10^k - 69 is prime.at n=14A290033
- Number of ways to pay n dollars using Canadian coins, that is: nickels (5 cents), dimes (10 cents), quarters (25 cents), loonies (100 cents or $1 coins) and toonies ($2 coins).at n=9A307849
- a(n) = [x^n] (x - 1)^4/((1 - 2*x)*(x^2 - 3*x + 1)).at n=10A341104
- Number of cells in a regular 7-gon after n generations of mitosis.at n=17A349808