Properties of the Number 66090

Sixty-Six Thousand Ninety

Basics

Value: 66089 → 66090 → 66091

Parity: even

Prime: No

Previous Prime: 66089

Next Prime: 66103

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 2203

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 2203, 4406

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10000001000101010

Octal: 201052

Duodecimal: 322B6

Hexadecimal: 1022a

Square: 4367888100

Square Root: 257.079754162011

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

1/4 the number of (n+1) X 7 binary arrays with all 2 X 2 subblock sums the same. A183983

T(n,k) = 1/4 the number of (n+1) X (k+1) binary arrays with all 2 X 2 subblock sums the same. A183986

a(n) = binomial(σ(n), n). A66090

Numbers m such that the squarefree kernel of m is less than the squarefree kernel of m+1. A79709