Properties of the Number -615669

Six Hundred Fifteen Thousand Six Hundred Sixty-Nine

Basics

Value: -615670 → -615669 → -615668

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 205223

Divisors: 1, 3, 205223, 615669

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10010110010011110101

Octal: -2262365

Duodecimal: -258359

Hexadecimal: -964f5

Square: 379048317561

Square Root: 784.6457799542416

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

Triangle of coefficients of g.f. a*(1+x)ⁿ + b*(1-x)ⁿ⁺²*polylog(-n-1, x)/x + 2ⁿ*c*(1-x)ⁿ⁺¹*LerchPhi(x, -n, 1/2), with a = 65/2, b = -162/2, c = 135/2. A168525

a(n) = ∑_k=1..n+1 |A341287(n,k)|. A341323