Properties of the Number 66530

Sixty-Six Thousand Five Hundred Thirty

Basics

Value: 66529 → 66530 → 66531

Parity: even

Prime: No

Previous Prime: 66529

Next Prime: 66533

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 6653

Divisors: 1, 2, 5, 10, 6653, 13306, 33265, 66530

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001111100010

Octal: 201742

Duodecimal: 32602

Hexadecimal: 103e2

Square: 4426240900

Square Root: 257.93410011086166

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

Number of regions in the hyperoctahedral (or cocktail party) graph of order n. A368755

Number of digits in n-th even perfect number (A000396). A61193

Consecutive states of the linear congruential pseudo-random number generator (9806·s+1) mod (2¹⁷-1) when started at s=1. A384236

Indices of triple-safe primes: p=prime(n) is double-safe: q=(p-1)/2, r=(q-1)/2 and s=(r-1)/2 are all prime (and q is double-safe). A75134

G.f. satisfies A(x) = x + x·A(A(A(A(x)))). A196523

Expansion of (1+x+x³)/((1-x)*(1-x⁴)). A66530