6498
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 27
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 18
- Divisor Sum
- 14859
- Proper Divisor Sum (Aliquot Sum)
- 8361
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2052
- Möbius Function
- 0
- Radical
- 114
- Omega Function (Ω)
- 5
- 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
- 137
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Expansion of a cusp form of weight 8 for Gamma_1(6).at n=16A006354
- Coordination sequence for NiAs(2), As position.at n=38A009945
- Numbers k such that k divides 2^(k+1) - 2.at n=28A014741
- Positive integers n such that n | (2^n + n/2 - 1).at n=26A015942
- Powers of fifth root of 23 rounded down.at n=14A018180
- Fibonacci sequence beginning 2, 16.at n=14A022370
- a(n) = s(1)*s(n) + s(2)*s(n-1) + ... + s(k)*s(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3).at n=37A024312
- a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = floor( n/2 ), s = natural numbers >= 3.at n=36A024875
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 80.at n=5A031578
- a(n) = n^3 - n^2.at n=19A045991
- Numbers n such that n^3 is the sum of two nonzero squares in exactly one way.at n=34A050804
- a(n) = n^2 * phi(n).at n=18A053191
- Totients of consecutive pure powers of primes.at n=46A053198
- T(n,n-3), array T as in A054110.at n=24A054112
- Numbers k such that k^2 contains only digits {0,2,4}, not ending with zero.at n=2A058423
- Numbers which have more different digits than their squares.at n=36A061277
- Numbers n such that the n-th row of triangle in A073932 contains exactly the divisors of n.at n=31A073935
- a(n) = 1^n + 7^n + 8^n.at n=4A074523
- Maximum number of regions into which the plane can be divided using n (concave) quadrilaterals.at n=29A077591
- Twice a square but not the sum of 2 distinct squares.at n=35A081324