Properties of the Number 66490

Sixty-Six Thousand Four Hundred Ninety

Basics

Value: 66489 → 66490 → 66491

Parity: even

Prime: No

Previous Prime: 66467

Next Prime: 66491

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 61 × 109

Divisors: 1, 2, 5, 10, 61, 109, 122, 218, 305, 545

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001110111010

Octal: 201672

Duodecimal: 3258A

Hexadecimal: 103ba

Square: 4420920100

Square Root: 257.8565492672234

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

Numerators of continued fraction convergents to sqrt(159). A41292

Write down decimal expansion of Euler-Mascheroni constant γ (A001620); divide up into minimal chunks so that chunks have increasing length and do not begin with zero. A59856

Numbers whose base-3 representation has exactly 11 runs. A43591

Numbers n such that number of runs in the base 3 representation of n is congruent to 1 mod 10. A43816

Number of primes of the form 4m+3 that are <= n. A66490

Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum unequal to 4 or 5 and every diagonal and antidiagonal sum equal to 4 or 5. A251904