Properties of the Number 11687

Eleven Thousand Six Hundred Eighty-Seven

Basics

Value: 11686 → 11687 → 11688

Parity: odd

Prime: No

Previous Prime: 11681

Next Prime: 11689

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 13 × 29 × 31

Divisors: 1, 13, 29, 31, 377, 403, 899, 11687

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110110100111

Octal: 26647

Duodecimal: 691B

Hexadecimal: 2da7

Square: 136585969

Square Root: 108.10642904101495

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) = n*(14·n-3). A185019

Decimal value of the bitmap of active segments in 7-segment display of the number n, variant 2 ("abcdefg" scheme: bits represent segments in clockwise order). A234692

Number of irreducible multiple ζ values at weight n. A113788

Numbers k such that 4*φ(k) = 3*σ(k). A65819

Numerator of 2ⁿ*(3·n-3)!/( ((n-1)!)³ * (2·n)! ). A4677

a(n) = c(prime(n))/prime(n), where c = Perrin sequence A001608 (starting 0,2,3,...) and prime(n) is the n-th prime. A14981

Number of unlabeled maximal independent sets in the n-cycle graph. A127687

The sums of pairs of adjacent terms are the odd palindromic primes in ascending order. A181881

Sphenic numbers k such that floor(log(k)/log(lpf(k))) = 1+floor(log(k)/log(p)) for all primes p | k such that p > lpf(k), where lpf = A020639(k). A383177

a(n) = (A212146(n)-1)/2. A212147