Properties of the Number 8650

Eight Thousand Six Hundred Fifty

Basics

Value: 8649 → 8650 → 8651

Parity: even

Prime: No

Previous Prime: 8647

Next Prime: 8663

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 ² × 173

Divisors: 1, 2, 5, 10, 25, 50, 173, 346, 865, 1730

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000111001010

Octal: 20712

Duodecimal: 500A

Hexadecimal: 21ca

Square: 74822500

Square Root: 93.00537618869137

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 ways of refining the partition n¹ to get 1ⁿ. A213427

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7. A252305

Number of cycles of n-digit numbers (including fixed points) under the Kaprekar map A151949. A164731

Indices of semiprimes where largest gap occurs. Or, positions of records in A065516. A85809

a(n) = 14·n² - 4·n. A195023

Numbers of the form (square + 1) that are not squarefree. A124809

Number of integer partitions of n without all different sums of two-element submultisets. A366753

Numbers of the form m² + 1 that can be expressed in more than one way as j² + k² with j > k > 1. A299708

Relative of Hofstadter Q-sequence: a(n) = max(0, n+4315) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0. A373237

Expansion of -x*(x²+1)*(x+1)²/((2·x³+x²-1)*(x⁴+1)). A107852