Properties of the Number 66766

Sixty-Six Thousand Seven Hundred Sixty-Six

Basics

Value: 66765 → 66766 → 66767

Parity: even

Prime: No

Previous Prime: 66763

Next Prime: 66791

Digit Sum: 31

Digital Root: 4

Palindrome: Yes

Factorization: 2 × 7 × 19 × 251

Divisors: 1, 2, 7, 14, 19, 38, 133, 251, 266, 502

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010011001110

Octal: 202316

Duodecimal: 3277A

Hexadecimal: 104ce

Square: 4457698756

Square Root: 258.3911763199355

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 integer partitions of n whose mean is not an integer. A349156

Numbers which have only digits 6 and 7 in base 10. A256292

a(n) = 6*(10^2·n+1-1)/9 + 10ⁿ. A332167

Decimal expansion of ∑_k>=1 σ(k)/2^k where σ(k) is the sum of divisors of k, 1 <= d <= k. A66766