Properties of the Number 66881

Sixty-Six Thousand Eight Hundred Eighty-One

Basics

Value: 66880 → 66881 → 66882

Parity: odd

Prime: No

Previous Prime: 66877

Next Prime: 66883

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 47 × 1423

Divisors: 1, 47, 1423, 66881

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: 10000010101000001

Octal: 202501

Duodecimal: 32855

Hexadecimal: 10541

Square: 4473068161

Square Root: 258.61361139738955

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

Partial sums of A299255. A299261

Number of regions in a regular 2n-gon when all vertices are connect by straight lines except for the n lines joining diametrically opposite vertices. A368813

Position of cubes in the EKG sequence (A064413). A140418

Numbers n such that σ(φ(n))/σ(n) is an integer >= 4. A66881