Properties of the Number 68381

Sixty-Eight Thousand Three Hundred Eighty-One

Basics

Value: 68380 → 68381 → 68382

Parity: odd

Prime: No

Previous Prime: 68371

Next Prime: 68389

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 19 × 59 × 61

Divisors: 1, 19, 59, 61, 1121, 1159, 3599, 68381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000101100011101

Octal: 205435

Duodecimal: 336A5

Hexadecimal: 10b1d

Square: 4675961161

Square Root: 261.4976099317162

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) = A006496(n)/2. A45873

Numbers n such that σ(φ(n))/σ(n) = 3. A67383

a(n) = (2·n+1)*(2·n+3)*(2·n+5)/3. A162540

Number of Grassmannian permutations of size n that avoid a pattern, σ, where σ is a pattern of size 6 with exactly one descent. A362193

Number of partitions of n X n checkerboard by two edgewise-connected sets which produce the maximum n²-2n+2 frontier edges between the two sets. A68381