Properties of the Number 66831

Sixty-Six Thousand Eight Hundred Thirty-One

Basics

Value: 66830 → 66831 → 66832

Parity: odd

Prime: No

Previous Prime: 66821

Next Prime: 66841

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 22277

Divisors: 1, 3, 22277, 66831

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10000010100001111

Octal: 202417

Duodecimal: 32813

Hexadecimal: 1050f

Square: 4466382561

Square Root: 258.5169240107889

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

Sum of next n primes. A7468

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal. A237099

Number of reduced words of length n in the Weyl group E₇ on 7 generators and order 2903040. A162493

Integers of the form 8k + 7 that can be written as a sum of four distinct squares of the form m, m + 2, m + 3, m + 4, where m == 2 (mod 4). A243581

Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal. A237093

Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal. A237095

Numbers k such that σ(k) divides σ(φ(k)). A66831