Properties of the Number 66418

Sixty-Six Thousand Four Hundred Eighteen

Basics

Value: 66417 → 66418 → 66419

Parity: even

Prime: No

Previous Prime: 66413

Next Prime: 66431

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 11 × 3019

Divisors: 1, 2, 11, 22, 3019, 6038, 33209, 66418

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001101110010

Octal: 201562

Duodecimal: 3252A

Hexadecimal: 10372

Square: 4411350724

Square Root: 257.71689894145476

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

Expansion of exp( ∑_n>=1 A283533(n)/n·xⁿ ) in powers of x. A283579

Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of ∏_j>=1 1/(1-x^j)^{j^(k·j}) in powers of x. A283674

a(0)=0: a(n)=A002865(2·n)+A002865(2·n+1), n>=1. A182844

Numbers k for which φ(k) + anti-φ(k) = k. A66418

Brilliant 10-pandigital number (semiprimes whose prime factors are 6-digit numbers) whose prime factors are together 10-pandigital. A366897