Properties of the Number 90689

Ninety Thousand Six Hundred Eighty-Nine

Basics

Value: 90688 → 90689 → 90690

Parity: odd

Prime: No

Previous Prime: 90679

Next Prime: 90697

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 23 × 3943

Divisors: 1, 23, 3943, 90689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: 10110001001000001

Octal: 261101

Duodecimal: 44595

Hexadecimal: 16241

Square: 8224494721

Square Root: 301.146143923511

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

Number of compositions (ordered partitions) of n into tetranacci numbers 1,2,4,8,15,29, ... (A000078). A357453

Values of m in the discriminant D = -4·m leading to a new maximum of the L-function of the Dirichlet series L(1) = ∑_k=1..oo Kronecker(D,k)/k. A3420

a(1) = 1, a(n) = floor((1/ω(n)!) * ∏_{p | n} 1 + (log n)/(log p)), where ω = A001221. A373738

Repeated primes in first occurrence in the progression kx²-1. A90689