Properties of the Number 8649

Eight Thousand Six Hundred Forty-Nine

Basics

Value: 8648 → 8649 → 8650

Parity: odd

Prime: No

Previous Prime: 8647

Next Prime: 8663

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 31 ²

Divisors: 1, 3, 9, 31, 93, 279, 961, 2883, 8649

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000111001001

Octal: 20711

Duodecimal: 5009

Hexadecimal: 21c9

Square: 74805201

Square Root: 93

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

Odd squares: a(n) = (2n+1)². Also centered octagonal numbers. A16754

Squares of the squarefree semiprimes (p²*q²). A85986

Number of partitions of integer partitions of n where all parts have the same length. A319066

a(n) = numerator(Jtilde2(n)). A260832

Powers of composite squarefree numbers that are not squarefree. A303606

a(n) = (4·n + 1)². A16814

a(n) = (3·n)². A16766

Squares n² such that floor(n²/9) is again a square. A204503

Numbers with 9 divisors. A30627

Products of squares of 2 or more distinct primes. A177492