Properties of the Number 68845

Sixty-Eight Thousand Eight Hundred Forty-Five

Basics

Value: 68844 → 68845 → 68846

Parity: odd

Prime: No

Previous Prime: 68821

Next Prime: 68863

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 5 × 7 ² × 281

Divisors: 1, 5, 7, 35, 49, 245, 281, 1405, 1967, 9835

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110011101101

Octal: 206355

Duodecimal: 33A11

Hexadecimal: 10ced

Square: 4739634025

Square Root: 262.3833073958784

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

Partial sums of binomial(2n,n)². A115257

The number of equal-sized squares in the highest stack of squares contained in successive Genealodrons formed from 2ⁿ - 1 equal-sized squares. A297103

Numbers n such that 247·2ⁿ-1 is prime. A50882

Number of n-node triangulations of the projective plane N₁ in which every node has degree >= 5. A129045

Final digits of the smallest prime starting with n!. A68845