Properties of the Number -8631

Six Hundred Thirty-One

Basics

Value: -8632 → -8631 → -8630

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 137

Divisors: 1, 3, 7, 9, 21, 63, 137, 411, 959, 1233

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10000110110111

Octal: -20667

Duodecimal: -4BB3

Hexadecimal: -21b7

Square: 74494161

Square Root: 92.90317540321213

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

sec(sin(sin(x)))=1+1/2!*x²-3/4!*x⁴-27/6!*x⁶+1145/8!*x⁸... A12012

Numbers k such that p(k), p(k)+6, p(k)+12, p(k)+18 are consecutive primes, where p(k) denotes k-th prime. A90832

a(0)=1; thereafter a(n) = 3·a(n-1) with digits rearranged into nonincreasing order. A321541

Diagonal in array of n-gonal numbers A081422. A81435

Numbers n such that p(n),p(n)+6,p(n)+12,p(n)+18 are consecutive primes and p(n)=6·k+1 for some k, where p(n) denotes n-th prime. A90838

Triangle read by rows: T(0,0)=1; for n >= 1 T(n,k) is the coefficient of x^k in the monic characteristic polynomial of the tridiagonal n X n matrix with main diagonal 5,5,5,... and sub- and superdiagonals 1,1,1,... (0 <= k <= n). A123967

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0. A255091

Triangle of coefficients of Chebyshev's S(n,x+5) polynomials (exponents of·in increasing order). A207824

Positions in A218787 and A218788 of successive distinct values. A218611

a(n+1) = ∑_{k=0..floor(n/3)} a(k) * a(n-k). A30032