Properties of the Number 68990

Sixty-Eight Thousand Nine Hundred Ninety

Basics

Value: 68989 → 68990 → 68991

Parity: even

Prime: No

Previous Prime: 68963

Next Prime: 68993

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 6899

Divisors: 1, 2, 5, 10, 6899, 13798, 34495, 68990

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110101111110

Octal: 206576

Duodecimal: 33B12

Hexadecimal: 10d7e

Square: 4759620100

Square Root: 262.65947536687116

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

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+3y>1. A211622

Indices of primes in the 10th-order Fibonacci number sequence, A122265. A257227

Array read by antidiagonals: T(n,k) is the number of rooted unlabeled k-gonal cacti having n polygons. A332648

Primes which remain prime after each digit is increased by 2. A68990