Properties of the Number 77998

Seventy-Seven Thousand Nine Hundred Ninety-Eight

Basics

Value: 77997 → 77998 → 77999

Parity: even

Prime: No

Previous Prime: 77983

Next Prime: 77999

Digit Sum: 40

Digital Root: 4

Palindrome: No

Factorization: 2 × 59 × 661

Divisors: 1, 2, 59, 118, 661, 1322, 38999, 77998

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000010101110

Octal: 230256

Duodecimal: 3917A

Hexadecimal: 130ae

Square: 6083688004

Square Root: 279.2812202780559

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

a(n) = 5ⁿ - 2ⁿ + 1ⁿ. A155596

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where T(n,k) = ∑_j=1..n (-1)^j+1 * floor(n/j)^k. A344726

a(n) = floor( (2/(exp(1) - 2))ⁿ ) for n >= 2, a(1) = 1. A88656

Expansion of (1-x)/(1-2·x-x²+x³). A77998