Properties of the Number -221659

Two Hundred Twenty-One Thousand Six Hundred Fifty-Nine

Basics

Value: -221660 → -221659 → -221658

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 221659

Divisors: 1, 221659

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -110110000111011011

Octal: -660733

Duodecimal: -A8337

Hexadecimal: -361db

Square: 49132712281

Square Root: 470.80675441204113

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

T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order. A222522

Expansion of ∏_k>=1 (1 - x^5·k)^5·k / (1 - x^k)^k. A285246

Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order. A222518

Number of nX7 0..3 arrays with exactly floor(nX7/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order. A222521