Properties of the Number 66061

Sixty-Six Thousand Sixty-One

Basics

Value: 66060 → 66061 → 66062

Parity: odd

Prime: No

Previous Prime: 66047

Next Prime: 66067

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 31 × 2131

Divisors: 1, 31, 2131, 66061

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001000001101

Octal: 201015

Duodecimal: 32291

Hexadecimal: 1020d

Square: 4364055721

Square Root: 257.0233452431899

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 positive integers <= 10ⁿ that are divisible by no prime exceeding 7. A106600

Strong pseudoprimes to base 85. A20311

n such that the sum of the factorials of the digits of n equals the sum of d∣n, 1<d<n. A202239

a(n) = (n² + n + 1)!. A66061

Number of (n+1) X 9 binary arrays with no 2 X 2 subblock determinant equal to any horizontal or vertical neighbor 2 X 2 subblock determinant. A185466