Properties of the Number 65980

Sixty-Five Thousand Nine Hundred Eighty

Basics

Value: 65979 → 65980 → 65981

Parity: even

Prime: No

Previous Prime: 65963

Next Prime: 65981

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 3299

Divisors: 1, 2, 4, 5, 10, 20, 3299, 6598, 13196, 16495

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000000110111100

Octal: 200674

Duodecimal: 32224

Hexadecimal: 101bc

Square: 4353360400

Square Root: 256.865723676788

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

A008585+A029907. A172050

Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically. A207847

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically. A207845

Inverse binomial transform of [1¹,2²,3³,...], shifted right by one index. A65980