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Properties of the Number 87669

Eighty-Seven Thousand Six Hundred Sixty-Nine

Basics

Value: 87668 → 87669 → 87670

Parity: odd

Prime: No

Previous Prime: 87649

Next Prime: 87671

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

Today's Target

2196 Try Today's Challenge

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: SHIFTLEFT(column 0 of Tp) = p*(column p+1 of T), or [Tp](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 (4·10k + 149)/9 is prime. A284638
The smallest index m such that b(m) is an integer, where b(0)=(2n+1)/n and b(k+1)=b(k)*floor(b(k)) for k>=0. A87669