Properties of the Number 63978

Sixty-Three Thousand Nine Hundred Seventy-Eight

Basics

Value: 63977 → 63978 → 63979

Parity: even

Prime: No

Previous Prime: 63977

Next Prime: 63997

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 10663

Divisors: 1, 2, 3, 6, 10663, 21326, 31989, 63978

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111100111101010

Octal: 174752

Duodecimal: 31036

Hexadecimal: f9ea

Square: 4093184484

Square Root: 252.9387277583249

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number T(n,k) of multisets of nonempty words with a total of n letters over k-ary alphabet such that all k letters occur at least once in the multiset; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A257740

a(n) = ∑_i=n..n+1 ∑_j=i+1..n+2 ∑_k=j+1..n+3 prime(i)*prime(j)*prime(k). A127349

Number of multisets of nonempty words with a total of n letters over ternary alphabet such that all letters occur at least once in the multiset. A320213

∑_{i for which n - i*(i-1)/2 >= 0} binomial (n - i*(i-1)/2, i). A63978