Properties of the Number 66139

Sixty-Six Thousand One Hundred Thirty-Nine

Basics

Value: 66138 → 66139 → 66140

Parity: odd

Prime: No

Previous Prime: 66137

Next Prime: 66161

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 19 × 59 ²

Divisors: 1, 19, 59, 1121, 3481, 66139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001001011011

Octal: 201133

Duodecimal: 32337

Hexadecimal: 1025b

Square: 4374367321

Square Root: 257.17503766889973

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

Row 3 of rectangular table A124530. A124533

Pisot sequence L(8,9). A48590

Number of (n+2) X 4 0..2 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock. A186561

Rectangular table, read by antidiagonals, such that the g.f. of row n, R_n(y), satisfies: R_n(y) = ∑_k>=0 y^k * R_k(y)^n·k for n>=0, with R₀(y) = 1/(1-y). A124530

Squares in every base >=3 (involving no carries and no digit apart from 0, 1 and 2). A66139