Properties of the Number 89665

Eighty-Nine Thousand Six Hundred Sixty-Five

Basics

Value: 89664 → 89665 → 89666

Parity: odd

Prime: No

Previous Prime: 89659

Next Prime: 89669

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 5 × 79 × 227

Divisors: 1, 5, 79, 227, 395, 1135, 17933, 89665

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111001000001

Octal: 257101

Duodecimal: 43A81

Hexadecimal: 15e41

Square: 8039812225

Square Root: 299.44114613726686

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

Third column of triangle A054453. A54454

a(n) = ∑_{k=0..floor(n/2)} binomial(n,k) * binomial(n+2·k,n-2·k). A378406

From variance of Fibonacci search. A6479

a(n) = S2(n,2), where S2(n, t) = ∑_k=0..n k^t *(∑_j=0..k binomial(n,j))². A89665