Properties of the Number -68587

Sixty-Eight Thousand Five Hundred Eighty-Seven

Basics

Value: -68588 → -68587 → -68586

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 107 × 641

Divisors: 1, 107, 641, 68587

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10000101111101011

Octal: -205753

Duodecimal: -33837

Hexadecimal: -10beb

Square: 4704176569

Square Root: 261.8911987830061

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

Semiprimes of the form n*(3·n-1)/2. A245365

The first of three consecutive pentagonal numbers the sum of which is equal to the sum of three consecutive primes. A298250

Pentagonal numbers (A000326) that are also brilliant numbers (A078972). A113941

Smallest number m such that prime(n) is a factor of both m and σ(m). A156099

Semiprimes of the form p(6p - 1). A330409

Frobenius-Perron dimensions of simple integral fusion rings of rank 4. A369625

Pentagonal numbers (A000326) whose digit reversal is the product of 2 palindromes greater than 1. A115703