Properties of the Number 66430

Sixty-Six Thousand Four Hundred Thirty

Basics

Value: 66429 → 66430 → 66431

Parity: even

Prime: No

Previous Prime: 66413

Next Prime: 66431

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 7 × 13 × 73

Divisors: 1, 2, 5, 7, 10, 13, 14, 26, 35, 65

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001101111110

Octal: 201576

Duodecimal: 3253A

Hexadecimal: 1037e

Square: 4412944900

Square Root: 257.7401792503451

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

a(n) = (9ⁿ - 1)/8. A2452

Triangle of Gaussian binomial coefficients [ n,k ] for q = 9. A22173

Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0. A33113

Number of ways of writing n as the sum of 10 triangular numbers from A000217. A226254

Palindromic numbers in bases 3 and 9 written in base 10. A259386

a(n) = 111111 in base n. A53700

Numbers k such that k² is palindromic in base 9. A29994

Triangle of central factorial numbers 4^k T(2n+1, 2n+1-2k). A8958

Numbers of the form (3^mr-1)/(3^r-1) for positive integers m, r. A76270

Numbers that are the sum of four third powers in nine or more ways. A345146