6697
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 28
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6916
- Proper Divisor Sum (Aliquot Sum)
- 219
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6480
- Möbius Function
- 1
- Radical
- 6697
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
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
- 93
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers that are the sum of 12 positive 7th powers.at n=37A003379
- Pseudoprimes to base 7.at n=14A005938
- Numerator of [x^n] in the Taylor expansion exp(cosec(x) - cosech(x)) = 1 + x/3 + x^2/18 + x^3/162 + x^4/1944 + 211*x^5/51030 + ...at n=8A013529
- Numerator of [x^(2n)] in the Taylor expansion cos(cosec(x) - cosech(x)).at n=4A013534
- Multiplicity of trivial character in V_n, where V = Sum V_n is the graded module for the Monster simple group.at n=35A014810
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite CON = CIT-1 H2[B2Si54O112] starting with a T5 atom.at n=12A019101
- Pseudoprimes to base 17.at n=25A020145
- Pseudoprimes to base 19.at n=34A020147
- Pseudoprimes to base 26.at n=40A020154
- Pseudoprimes to base 39.at n=20A020167
- Pseudoprimes to base 48.at n=37A020176
- Pseudoprimes to base 61.at n=45A020189
- Pseudoprimes to base 62.at n=45A020190
- Pseudoprimes to base 65.at n=31A020193
- Pseudoprimes to base 72.at n=28A020200
- Pseudoprimes to base 80.at n=39A020208
- Pseudoprimes to base 88.at n=33A020216
- Pseudoprimes to base 92.at n=45A020220
- Pseudoprimes to base 93.at n=44A020221
- Strong pseudoprimes to base 17.at n=10A020243