Properties of the Number 66570

Sixty-Six Thousand Five Hundred Seventy

Basics

Value: 66569 → 66570 → 66571

Parity: even

Prime: No

Previous Prime: 66569

Next Prime: 66571

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 7 × 317

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010000001010

Octal: 202012

Duodecimal: 32636

Hexadecimal: 1040a

Square: 4431564900

Square Root: 258.0116276449571

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

Numbers k having exactly 5 distinct prime factors, the largest of which is greater than or equal to sqrt(k) (i.e., sqrt(k)-rough numbers with exactly 5 distinct prime factors). A115959

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 86. A31764

Numbers k such that k-17, k-1, k+1 and k+17 are consecutive primes. A262176

Column 0 of triangular matrix T=A101479, in which row n equals row (n-1) of T^n-1 followed by '1'. A101481

Product of numbers <= n that have a prime factor in common with n. A66570