16607
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 16608
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 16606
- Möbius Function
- -1
- Radical
- 16607
- Omega Function (Ω)
- 1
- 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
- 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
- 128
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1921
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes p such that p, p+12, p+24 are consecutive primes.at n=11A052188
- Beginning with 3, least prime, greater than the previous term, such that the arithmetic mean of first n terms is a prime.at n=39A090918
- List of triples of primes with common difference 12.at n=33A128312
- Row sums of triangle A132071.at n=14A132072
- Primes of the form 210k + 17.at n=38A140842
- Primes congruent to 18 mod 53.at n=39A142548
- Primes congruent to 28 mod 59.at n=30A142755
- Primes congruent to 15 mod 61.at n=33A142813
- Prime numbers p such that p - 1 is the fourth a-figurate number and nineteenth b-figurate number for some a and b.at n=16A144327
- a(n) = 46*n^2 + 1.at n=19A158632
- Primes p dividing every A167859(m) from m=(p-1)/2 to m=(p-1).at n=24A167860
- Primes of the form floor(binomial(k,2)/4).at n=33A171574
- Primes p such that 12*p^2-1 and 16*p^3-1 are also primes.at n=30A193051
- a(n) = a(n-1) + a(n-2) + a(n-3), with a(0) = 1, a(1) = a(2) = 5.at n=15A214827
- Primes of the form p*q - 30, where p and q are consecutive primes.at n=14A229613
- Prime terms in the tribonacci-like sequence A214827.at n=9A242325
- Primes such that A271229(n) = prime(n).at n=25A276649
- Primes equal to a centered pentagonal number plus 1.at n=16A285810
- SanD-50 primes: primes p such that p+d is also prime and sum of digits A007953(p(p+d)) = d, with d = 50.at n=41A307473
- Primes in A338529/2.at n=12A338533