Properties of the Number 66928

Sixty-Six Thousand Nine Hundred Twenty-Eight

Basics

Value: 66927 → 66928 → 66929

Parity: even

Prime: No

Previous Prime: 66923

Next Prime: 66931

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 47 × 89

Divisors: 1, 2, 4, 8, 16, 47, 89, 94, 178, 188

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000010101110000

Octal: 202560

Duodecimal: 32894

Hexadecimal: 10570

Square: 4479357184

Square Root: 258.70446459232204

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

Amicable numbers. A63990

Smaller of an amicable pair: (a,b) such that σ(a) = σ(b) = a+b, a < b. A2025

Amicable pairs. A259180

Numbers n whose abundance is 64: σ(n) - 2n = 64. A275996

Integers that are Rhonda numbers to base 12. A100971

Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x. A259933

Smaller of amicable pair (x, y) as they are listed in A259933. A260086

Numbers k such that σ(k) = σ(σ(k)-k). A206708

Amicable pairs with the property that both members have the same number of divisors. A328064

Symmetric difference of the primitive non-deficient numbers and the primitive Zumkeller numbers. A378538