Properties of the Number 66709

Sixty-Six Thousand Seven Hundred Nine

Basics

Value: 66708 → 66709 → 66710

Parity: odd

Prime: No

Previous Prime: 66701

Next Prime: 66713

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 19 × 3511

Divisors: 1, 19, 3511, 66709

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 10000010010010101

Octal: 202225

Duodecimal: 32731

Hexadecimal: 10495

Square: 4450090681

Square Root: 258.28085488475523

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

Numbers m such that m² divides 2^k - 1 for some k, 0 < k <= m. A246503

Numbers k such that 2^{2^k-2} == 1 (mod k²) and 2^k-1 =/= 1 (mod k). A374953

Number of 7-step S, NW and NE-moving king's tours on an n X n board summed over all starting positions. A187381

Numbers k such that 2^{2^k-2} == 1 (mod k²). A374841

Triangle T(r,c) of winning binary "same game" templates. A66709