Properties of the Number -698

Six Hundred Ninety-Eight

Basics

Value: -699 → -698 → -697

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 349

Divisors: 1, 2, 349, 698

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010111010

Octal: -1272

Duodecimal: -4A2

Hexadecimal: -2ba

Square: 487204

Square Root: 26.419689627245813

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

Inverse of the Delannoy triangle. A103136

Difference between n and the sum of the factorials of its digits. A108911

Expansion of χ(-q) * χ(-q¹⁵) / (χ(-q⁶) * χ(-q¹⁰)) in powers of q where χ() is a Ramanujan θ function. A132968

Expansion of f(-q², -q⁵)³ / (f(-q¹, -q⁶) * f(-q³, -q⁴)²) in powers of q where f(, ) is Ramanujan's general θ function. A262933

G.f.: Im((2·i; x)_oo), where (a; q)_oo is the q-Pochhammer symbol, i = sqrt(-1). A292140

Expansion of g.f. (1-x+x²)/(1+x-x³). A104771

a(n) = [xⁿ] ∏_d∣n 1/(1 + x^d). A300548

Riordan array ((1-x+sqrt(1+6·x+x²))/2, (sqrt(1+6·x+x²)-x-1)/2). A112477

Expansion of g.f. ∏_n>=1 (1-xⁿ)*(1-x^5·n)/(1-x^3·n)². A54274

Second column of inverse of Delannoy triangle. A103138