Properties of the Number -8645

Six Hundred Forty-Five

Basics

Value: -8646 → -8645 → -8644

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 7 × 13 × 19

Divisors: 1, 5, 7, 13, 19, 35, 65, 91, 95, 133

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -10000111000101

Octal: -20705

Duodecimal: -5005

Hexadecimal: -21c5

Square: 74736025

Square Root: 92.97849213662265

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) = A343277(n)*[x^k] p(n, x) where p(n, x) = (1/(n+1))*∑_k=0..n (-1)^k*E1(n, k)*x^{n - k} / binomial(n, k), and E1(n, k) are the Eulerian numbers A123125. Triangle read by rows, for 0 <= k <= n. A342321

Expansion of e.g.f. (1/x) * Series_Reversion( x/(3·x + sqrt(9·x²+1))^1/3 ). A385443

a(n) = (2·n+5)*(2·n+1). A78371

4-dimensional figurate numbers: a(n) = (6·n-2)*binomial(n+2,3)/4. A2419

Numbers k such that k and k+1 have 4 distinct prime factors. A140078

Squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p. A324315

a(n) = n*(n+1)*(n+2)*(n+7)/24. A5582

Dimensions of the irreducible representations of the simple Lie algebra of type E7 over the complex numbers, listed in increasing order. A121736

Numbers n whose square can be represented as a repdigit number in some base less than n. A158235

Sum of the sixth largest parts of the partitions of n into 9 parts. A326468