Properties of the Number 68021

Sixty-Eight Thousand Twenty-One

Basics

Value: 68020 → 68021 → 68022

Parity: odd

Prime: No

Previous Prime: 67993

Next Prime: 68023

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 251 × 271

Divisors: 1, 251, 271, 68021

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000100110110101

Octal: 204665

Duodecimal: 33445

Hexadecimal: 109b5

Square: 4626856441

Square Root: 260.8083587617544

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

Sequence of pairwise relatively prime numbers of class P₈ (see comment in A275246). A275253

Number of distinct variances of nonempty subsets of {1, ..., n}. A382383

Brilliant numbers such that when they are concatenated with their 10's complement, which also must be brilliant, the result is a prime. A84629

Number of permutations of length n which avoid the patterns 231, 12345. A116844

Z(S_m; σ[1](n), σ[2](n),..., σ[m](n)) where Z(S_m; x₁,x₂,...,x_m) is the cycle index of the symmetric group S_m and σ[k](n) is the sum of k-th powers of divisors of n; m=4. A68021

Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 4Xn array. A219688