Properties of the Number -8085

Eighty-Five

Basics

Value: -8086 → -8085 → -8084

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 7 ² × 11

Divisors: 1, 3, 5, 7, 11, 15, 21, 33, 35, 49

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1111110010101

Octal: -17625

Duodecimal: -4819

Hexadecimal: -1f95

Square: 65367225

Square Root: 89.9166280506559

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, read by rows, each row n being defined by g.f. ∏_k=1..n (k + x - k·x²), for n >= 0. A322225

Numerators of triangle T(n,k), n>=0, 0<=k<=n, read by rows: T(n,k) is the coefficient of x^2k+1 in polynomial u_n(x), used to approximate x->sin(π*x)/π. A144846

Triangle read by rows giving coefficients in Bernoulli polynomials as defined in A001898, after multiplication by the common denominators A001898(n). A100655

cosh(arcsin(x)+log(x+1))=1+4/2!*x²-6/3!*x³+43/4!*x⁴-170/5!*x⁵... A12908

Odd abundant numbers (odd numbers m whose sum of divisors exceeds 2m). A5231

Odd primitive abundant numbers. A6038

Expansion of (∏_j>=1 (1-(-x)^j) - 1)¹¹ in powers of x. A47649

Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section. A286781

Second 11-gonal (or hendecagonal) numbers: a(n) = n*(9·n+7)/2. A62728

5 times pentagonal numbers: 5·n*(3·n-1)/2. A152734