Properties of the Number 8166

Eight Thousand One Hundred Sixty-Six

Basics

Value: 8165 → 8166 → 8167

Parity: even

Prime: No

Previous Prime: 8161

Next Prime: 8167

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 1361

Divisors: 1, 2, 3, 6, 1361, 2722, 4083, 8166

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111111100110

Octal: 17746

Duodecimal: 4886

Hexadecimal: 1fe6

Square: 66683556

Square Root: 90.36592278065886

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

Second-order Eulerian numbers: a(n) = 2ⁿ - 2·n. A5803

Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,3. A64238

T(n,k)=Number of length-n 0..k arrays with no repeated value equal to the previous repeated value. A269467

T(n,k)=Number of length-n 0..k arrays with no repeated value differing from the previous repeated value by other than plus or minus one modulo k+1. A269678

Algebraic degree of the onset of the logistic map n-bifurcation. A118454

The difference between number of even and number of odd Grassmannian permutations of size n. A356185

Triangle T(n,k) (n >= 1, 0 <= k <= floor((n-1)/2)) read by rows, where T(n,k) = (k+1)T(n-1,k) + (2n-4k)T(n-1,k-1). A101280

π(n) is a power of 2, where π(n) = A000720(n) is the number of primes <= n. A73798

Expansion of (1-x)^-1/(1 - x - 2·x² + 2·x³). A77866

E.g.f.: (e^x - x)². A130102