Properties of the Number 81667

Eighty-One Thousand Six Hundred Sixty-Seven

Basics

Value: 81666 → 81667 → 81668

Parity: odd

Prime: Yes

Previous Prime: 81649

Next Prime: 81671

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 81667

Divisors: 1, 81667

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111100000011

Octal: 237403

Duodecimal: 3B317

Hexadecimal: 13f03

Square: 6669498889

Square Root: 285.77438653595254

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

Primes of the form 3·m² - 8. A201781

Number of partitions of n into distinct parts with boundary size 10. A227567

Primes of the form (n²+2)/6 where n²+1 is prime. A215429

a(n) = Fibonacci(binomial(n+2,2)). A81667

a(n) = floor( ∑_k=1..n k^1/3 ). A352077