Properties of the Number -87669

Eighty-Seven Thousand Six Hundred Sixty-Nine

Basics

Value: -87670 → -87669 → -87668

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 17 × 191

Divisors: 1, 3, 9, 17, 27, 51, 153, 191, 459, 573

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011001110101

Octal: -253165

Duodecimal: -42899

Hexadecimal: -15675

Square: 7685853561

Square Root: 296.08951349211947

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

Triangular matrix T, read by rows, that satisfies: SHIFT_LEFT(column 0 of T^p) = p*(column p+1 of T), or [T^p](m,0) = p·T(p+m,p+1) for all m>=1 and p>=-1. A104980

Column 1 of triangle A104980; also equals column 0 of triangle A104986, which equals the matrix logarithm of A104980. A104981

Matrix logarithm of triangle A104980. A104986

Numbers k such that the k-th triangular number contains each of the 10 decimal digits exactly once. A115939

Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms in row n at positions 0 and {(m+1)*(m+2)/2-2, m>0} and then taking partial sums, starting with all 1's in row 0. A156628

Triangle of number of connected graphs with n>=2 nodes and maximum degree 1<=k<n. A332760

Augmentation of the triangle A074909. See Comments. A193630

Numbers k such that (4·10^k + 149)/9 is prime. A284638