Properties of the Number -206991

Two Hundred Six Thousand Nine Hundred Ninety-One

Basics

Value: -206992 → -206991 → -206990

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 109 × 211

Divisors: 1, 3, 9, 109, 211, 327, 633, 981, 1899, 22999

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110010100010001111

Octal: -624217

Duodecimal: -9B953

Hexadecimal: -3288f

Square: 42845274081

Square Root: 454.96263582848206

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

Sum of the squares of the quadratic nonresidues of prime(n). A125617

Smallest possible largest number in a 7 by n average array where repetitions are not allowed without diagonals. A195757