Properties of the Number 6866

Six Thousand Eight Hundred Sixty-Six

Basics

Value: 6865 → 6866 → 6867

Parity: even

Prime: No

Previous Prime: 6863

Next Prime: 6869

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 3433

Divisors: 1, 2, 3433, 6866

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101011010010

Octal: 15322

Duodecimal: 3B82

Hexadecimal: 1ad2

Square: 47141956

Square Root: 82.86132994346639

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

Numbers k that divide the (right) concatenation of all numbers <= k written in base 2 (most significant digit on left). A29447

Numbers n such that there are equal numbers of 0's and 1's in first n digits of binary representation of π. A39624

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 01010101 or 01010111. A260138

6th power analog of Keith numbers. A281917

Numbers that are the sum of six fourth powers in three or more ways. A345560

Numbers that are the sum of six fourth powers in four or more ways. A345561

Numbers that are the sum of six fourth powers in exactly four ways. A345816

Integers that need 6 iterations of the map x->A352172(x) to reach 1. A352264

Natural numbers n that have the property that starting from k = n, the fixed point of the map k -> floor(tan(k)) is strictly positive, while the smallest number encountered during the iteration is strictly negative. A258202

Number of n edge connected sensed planar maps with an external face in which all internal faces are triangles. A378338