Properties of the Number 66925

Sixty-Six Thousand Nine Hundred Twenty-Five

Basics

Value: 66924 → 66925 → 66926

Parity: odd

Prime: No

Previous Prime: 66923

Next Prime: 66931

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 ² × 2677

Divisors: 1, 5, 25, 2677, 13385, 66925

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010101101101

Octal: 202555

Duodecimal: 32891

Hexadecimal: 1056d

Square: 4478955625

Square Root: 258.69866640553056

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

T(n,k)=Number of length-n 0..k arrays with no repeated value differing from the previous repeated value by other than plus two, zero or minus 1. A269619

a(n) = 44·n² + 1. A158630

Number of length-n 0..4 arrays with no repeated value differing from the previous repeated value by other than plus two, zero or minus 1. A269615

Number of length-7 0..n arrays with no repeated value differing from the previous repeated value by other than plus two, zero or minus 1. A269623

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 27. A31615

Number of length-n 0..n arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..n. A215394

T(n,k) = number of length-n 0..k arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..k. A215401

Numbers k having a partition k = sum x_i for which sum k/x_i is the same partition of k. A66925