Properties of the Number 66806

Sixty-Six Thousand Eight Hundred Six

Basics

Value: 66805 → 66806 → 66807

Parity: even

Prime: No

Previous Prime: 66797

Next Prime: 66809

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 33403

Divisors: 1, 2, 33403, 66806

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010011110110

Octal: 202366

Duodecimal: 327B2

Hexadecimal: 104f6

Square: 4463041636

Square Root: 258.4685667542574

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

T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 12. A234405

Number of stacked directed animals on the triangular lattice. A59714

Number of (n+1)X(1+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 12. A234400

Number of (n+1)X(3+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 12. A234402

Expansion of ∏_k>=1 (1+x^k)^A001055(k). A66806