6497
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6660
- Proper Divisor Sum (Aliquot Sum)
- 163
- 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
- 6336
- Möbius Function
- 1
- Radical
- 6497
- 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
- 124
- 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 2 positive 4th powers.at n=34A003336
- Numbers that are the sum of at most 2 nonzero 4th powers.at n=43A004831
- 4-dimensional centered cube numbers.at n=7A008514
- a(n) = 3^n - n^2.at n=8A024025
- a(n) = 9^n - n^3.at n=4A024104
- Numbers k > 1 such that k mod ord2(k) is even, where ord2(k) is the order of 2 mod k.at n=8A036260
- Number of chiral n-ominoes in n-2 space.at n=9A036365
- Numerators of continued fraction convergents to sqrt(203).at n=3A041376
- Numerators of continued fraction convergents to sqrt(709).at n=6A042364
- Numerators of continued fraction convergents to sqrt(812).at n=3A042566
- Numbers having three 8's in base 9.at n=17A043487
- Integers n such that the number of digits in n! is a cube.at n=16A056851
- Numbers n such that sigma(n)^2 - phi(n)^2 is a perfect square.at n=24A057654
- Numbers k such that sigma(k+2) - sigma(k) = prime(k+1) - prime(k).at n=23A067062
- Centered 16-gonal numbers.at n=28A069129
- a(n) = 7^n + 8^n.at n=4A074622
- Generalized Fermat numbers of the form (k+1)^2^m + k^2^m, with m>1.at n=7A078901
- Numbers m such that m and m+2 are both brilliant numbers, where brilliant numbers are semiprimes whose prime factors have an equal number of decimal digits, or whose prime factors are equal.at n=10A083284
- Largest integer not expressible as a nonnegative linear combination of n and n^2 + 1.at n=18A087908
- Numbers that can be represented as j^4 + k^4, with 0 < j < k, in exactly one way.at n=27A088687