Properties of the Number 68642

Sixty-Eight Thousand Six Hundred Forty-Two

Basics

Value: 68641 → 68642 → 68643

Parity: even

Prime: No

Previous Prime: 68639

Next Prime: 68659

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 4903

Divisors: 1, 2, 7, 14, 4903, 9806, 34321, 68642

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110000100010

Octal: 206042

Duodecimal: 33882

Hexadecimal: 10c22

Square: 4711724164

Square Root: 261.9961831783051

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

G.f.: ∑_n>=0 (2ⁿ + i)ⁿ * xⁿ / (1 + 2ⁿ*i·x)ⁿ⁺¹, where i² = -1. A324308

a(n) is the number of digits in the decimal representation of the smallest Lucas number that contains n consecutive identical digits. A217192

Index of the smallest n-digit palindromic triangular number, or 0 if no such number exists. A68642