Properties of the Number 66894

Sixty-Six Thousand Eight Hundred Ninety-Four

Basics

Value: 66893 → 66894 → 66895

Parity: even

Prime: No

Previous Prime: 66889

Next Prime: 66919

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 11149

Divisors: 1, 2, 3, 6, 11149, 22298, 33447, 66894

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010101001110

Octal: 202516

Duodecimal: 32866

Hexadecimal: 1054e

Square: 4474807236

Square Root: 258.6387441973843

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 n such that n²⁰⁴⁸ + 1 is prime (a generalized Fermat prime). A88361

Expansion of ∑_k>=0 x^2·k/∏_j=1..k (1 - j·2*x). A119429

Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7. A252380

Numbers k such that prime(2·k) - prime(k) == 0 (mod k). A66894