Properties of the Number 65989

Sixty-Five Thousand Nine Hundred Eighty-Nine

Basics

Value: 65988 → 65989 → 65990

Parity: odd

Prime: No

Previous Prime: 65983

Next Prime: 65993

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 7 × 11 × 857

Divisors: 1, 7, 11, 77, 857, 5999, 9427, 65989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000111000101

Octal: 200705

Duodecimal: 32231

Hexadecimal: 101c5

Square: 4354548121

Square Root: 256.88324196023376

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

Positive integers m such that π(m³) = π(j³) + π(k³) for some 0 < j <= k < m. A262409

Numbers k such that the first k ternary digits of π expressed in decimal forms a prime. A65989

a(n) is the number of ordered solutions (x,y,z) to x² + y² == z² mod n with 1 <= x,y,z <= n-1. A136679

Primes made up of a nonprime number of only nonprime digits. A153640