Properties of the Number 66771

Sixty-Six Thousand Seven Hundred Seventy-One

Basics

Value: 66770 → 66771 → 66772

Parity: odd

Prime: No

Previous Prime: 66763

Next Prime: 66791

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 2473

Divisors: 1, 3, 9, 27, 2473, 7419, 22257, 66771

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010011010011

Octal: 202323

Duodecimal: 32783

Hexadecimal: 104d3

Square: 4458366441

Square Root: 258.40085139178626

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

a(n) is the solution to the postage stamp problem with 5 denominations and n stamps. A1210

Odd numbers k such that A173557(k) = A173557(σ(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and σ is the sum of divisors function. A387159

a(n) = 5ⁿ*cos(2·n*arctan(1/2)) or denominator of tan(2·n*arctan(1/2)). A66771