Properties of the Number 69886

Sixty-Nine Thousand Eight Hundred Eighty-Six

Basics

Value: 69885 → 69886 → 69887

Parity: even

Prime: No

Previous Prime: 69877

Next Prime: 69899

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 2 × 83 × 421

Divisors: 1, 2, 83, 166, 421, 842, 34943, 69886

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001000011111110

Octal: 210376

Duodecimal: 3453A

Hexadecimal: 110fe

Square: 4884052996

Square Root: 264.35960357059093

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 achiral planar maps with n edges. A6443

Triangle read by rows: T(n,k) is the number of achiral combinatorial maps with n edges and genus k, 0 <= k <= floor(n/2). A380234

G.f.: A(x) = F(x·G(x))² where F(x) = G(x·F(x)) = 1 + x·F(x)³ is the g.f. of A001764 and G(x) = F(x/G(x)) = 1 + x·G(x)² is the g.f. of A000108 (Catalan). A153390

Duplicate of A006443. A54936

Star of David bonding digraph: characteristic polynomial: x(-18 - 10 x + 147 x² + 71 x³ - 312 x⁴ - 221 x⁵ + 140 x⁶ + 121 x⁷ - 17 x⁸ - 21 x⁹ + x¹¹). A121962

Smallest multiple of n starting with 1 with descending digit string (a left substring of 10987654321098...), 0 if no such number exists. A69886