Properties of the Number 65986

Sixty-Five Thousand Nine Hundred Eighty-Six

Basics

Value: 65985 → 65986 → 65987

Parity: even

Prime: No

Previous Prime: 65983

Next Prime: 65993

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 × 32993

Divisors: 1, 2, 32993, 65986

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000111000010

Octal: 200702

Duodecimal: 3222A

Hexadecimal: 101c2

Square: 4354152196

Square Root: 256.87740266516244

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

G.f. satisfies: A(x) = 1/(1 - x/(1 - x·A(x))³)². A161798

Numbers k such that 2^k + 3^k is a semiprime. A50244

Numbers k such that (2^k + 3^k)/13 is prime. A181628

a(n) = ∑_{i=1..floor((n+2)/4)} a(2i-1)*a(n-2i+1), with a(1)=a(2)=1 and a(3)=2. A24945

Numbers k such that σ(k) = φ(k+1) + φ(k) + φ(k-1). A65986