10609
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
- 3
- Divisor Sum
- 10713
- Proper Divisor Sum (Aliquot Sum)
- 104
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10506
- Möbius Function
- 0
- Radical
- 103
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 1
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- yes
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- yes
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 29
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- no
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- yes
- Achilles Number
- no
- Perfect Power
- yes
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Tribonacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) for n >= 3 with a(0) = a(1) = 0 and a(2) = 1.at n=18A000073
- Squares of primes.at n=26A001248
- Number of triples (i,j,k) with 1 <= i < j < k <= n and gcd(i,j,k) = 1.at n=42A015616
- Numbers m such that phi(m) * sigma(m) + k^2 is not a square for any k.at n=32A015713
- a(n) = (3*n+1)^2.at n=34A016778
- a(n) = (4n + 3)^2.at n=25A016838
- a(n) = (5*n + 3)^2.at n=20A016886
- a(n) = (6*n + 1)^2.at n=17A016922
- a(n) = (7*n + 5)^2.at n=14A017042
- a(n) = (8*n + 7)^2.at n=12A017150
- a(n) = (9*n + 4)^2.at n=11A017210
- a(n) = (10*n + 3)^2.at n=10A017306
- a(n) = (11*n + 4)^2.at n=9A017438
- a(n) = (12*n + 7)^2.at n=8A017606
- Strong pseudoprimes to base 43.at n=12A020269
- Squares of (odd numbers not divisible by 5).at n=41A028375
- Numbers that are both lucky and square.at n=21A031162
- Squares which when written backwards remain square (final 0's excluded).at n=14A033294
- Numbers that can be expressed as the product of two 3-digit numbers in at least one way.at n=15A033829
- Squares which can be rearranged into squares with the same number of digits.at n=22A034289