Properties of the Number 64090

Sixty-Four Thousand Ninety

Basics

Value: 64089 → 64090 → 64091

Parity: even

Prime: No

Previous Prime: 64081

Next Prime: 64091

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 13 × 17 × 29

Divisors: 1, 2, 5, 10, 13, 17, 26, 29, 34, 58

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101001011010

Octal: 175132

Duodecimal: 3110A

Hexadecimal: fa5a

Square: 4107528100

Square Root: 253.16002844051033

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

Numbers k that are the hypotenuse of exactly 40 distinct integer-sided right triangles, i.e., k² can be written as a sum of two squares in 40 ways. A97282

For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of successive numbers m which d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1) is an integer. A229996

Numbers that are the sum of 2 nonzero squares in 7 or more ways. A25298

Numbers that are the sum of 2 nonzero squares in 8 or more ways. A25299

Numbers that are the sum of 2 distinct nonzero squares in 7 or more ways. A25317

Numbers that are the sum of 2 distinct nonzero squares in 8 or more ways. A25318

Partial products of A002313, the primes that are 1 or 2 (mod 4). A185952

Expansion of ∏_k>=1 1 / (1 - ∑_j>=1 j·x^k·j). A329156

Numbers that are the sum of 2 nonzero squares in exactly 8 ways. A25291

a(n) = 4394·n - 1820. A156627