Properties of the Number -642615

Six Hundred Forty-Two Thousand Six Hundred Fifteen

Basics

Value: -642616 → -642615 → -642614

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 42841

Divisors: 1, 3, 5, 15, 42841, 128523, 214205, 642615

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10011100111000110111

Octal: -2347067

Duodecimal: -26BA73

Hexadecimal: -9ce37

Square: 412954038225

Square Root: 801.6327089135024

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

Expansion of (1-x)^-1/(1+2·x-x²-x³). A77920

a(n) = a(n-1) + 3·a(n-2) - a(n-4), with a(0)=1, a(1)=1, a(2)=4, a(3)=7. A124400