Properties of the Number 90665

Ninety Thousand Six Hundred Sixty-Five

Basics

Value: 90664 → 90665 → 90666

Parity: odd

Prime: No

Previous Prime: 90659

Next Prime: 90677

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 × 18133

Divisors: 1, 5, 18133, 90665

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001000101001

Octal: 261051

Duodecimal: 44575

Hexadecimal: 16229

Square: 8220142225

Square Root: 301.10629352439645

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

a(n) = ∑_k=1..n binomial(floor(n/k)+3,4). A365409

Numerators of continued fraction convergents to sqrt(765). A42474

Eigentriangle of Catalan triangle A033184. A172380

Triangle whose inverse has production matrix with general term (-1)^n-k+1*C(k+1, n-k+1). A172381

Triangle read by rows: T(n,k) = number of preferential arrangements of n things where the first object has rank k. A90665