Properties of the Number 66838

Sixty-Six Thousand Eight Hundred Thirty-Eight

Basics

Value: 66837 → 66838 → 66839

Parity: even

Prime: No

Previous Prime: 66821

Next Prime: 66841

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 23 × 1453

Divisors: 1, 2, 23, 46, 1453, 2906, 33419, 66838

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010100010110

Octal: 202426

Duodecimal: 3281A

Hexadecimal: 10516

Square: 4467318244

Square Root: 258.53046242174247

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..1 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors. A237859

a(n) = ∑_k=1..n (-1)^k+1 * floor(n/k)³. A344721

Number of (n+1)X(3+1) 0..1 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors. A237854

Number of (n+1)X(7+1) 0..1 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors. A237858

Positive numbers whose square starts and ends with exactly 44, and no 444. A348831

Product of primes < n that do not divide n. A66838