Properties of the Number -66987

Sixty-Six Thousand Nine Hundred Eighty-Seven

Basics

Value: -66988 → -66987 → -66986

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 827

Divisors: 1, 3, 9, 27, 81, 827, 2481, 7443, 22329, 66987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000010110101011

Octal: -202653

Duodecimal: -32923

Hexadecimal: -105ab

Square: 4487258169

Square Root: 258.81846920187127

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

a(n) = (n+1)*(n³+15·n²+74·n+132)/12. A217947

Triangle read by rows: T(n,0) = 3ⁿ, T(n,k) = T(n,k-1) + T(n-1,k) for 0 < k < n, and T(n,n) = T(n,n-1). A165992