Properties of the Number 66866

Sixty-Six Thousand Eight Hundred Sixty-Six

Basics

Value: 66865 → 66866 → 66867

Parity: even

Prime: No

Previous Prime: 66863

Next Prime: 66877

Digit Sum: 32

Digital Root: 5

Palindrome: Yes

Factorization: 2 × 67 × 499

Divisors: 1, 2, 67, 134, 499, 998, 33433, 66866

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000010100110010

Octal: 202462

Duodecimal: 32842

Hexadecimal: 10532

Square: 4471061956

Square Root: 258.58460897740997

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 with digits 6 and 8 only. A284635

Number of (1+1) X (n+1) arrays of permutations of 0..n·2+1 with each element having directed index change 1,0 0,-1 1,2 or -1,1. A264584

a(n) = 6*(10^2·n+1-1)/9 + 2·10ⁿ. A332168

Number of binary arrangements without adjacent 1's in n X n rhombic hexagonal grid torus. A66866