Properties of the Number 65990

Sixty-Five Thousand Nine Hundred Ninety

Basics

Value: 65989 → 65990 → 65991

Parity: even

Prime: No

Previous Prime: 65983

Next Prime: 65993

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 6599

Divisors: 1, 2, 5, 10, 6599, 13198, 32995, 65990

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000000111000110

Octal: 200706

Duodecimal: 32232

Hexadecimal: 101c6

Square: 4354680100

Square Root: 256.88518836242775

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

List of free corner-connected polyominoes in binary code (as defined in A246521), ordered first by number of bits, then by value of the binary code. A364928

Numbers k such that the value π(k), the number of primes <= k, can be obtained deleting some of the repeating adjacent digits of k. A113898

Numbers k such that the first k base-5 digits of π expressed in decimal forms a prime. A65990

G.f. satisfies: A(x) = exp( ∑_n>=1 A(xⁿ) / A(-xⁿ) * xⁿ/n ). A198785