Properties of the Number 66628

Sixty-Six Thousand Six Hundred Twenty-Eight

Basics

Value: 66627 → 66628 → 66629

Parity: even

Prime: No

Previous Prime: 66617

Next Prime: 66629

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 16657

Divisors: 1, 2, 4, 16657, 33314, 66628

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010001000100

Octal: 202104

Duodecimal: 32684

Hexadecimal: 10444

Square: 4439290384

Square Root: 258.1240012087214

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

First position of n in A354578, where A354578(k) is the number of integer compositions whose run-sums constitute the k-th composition in standard order (graded reverse-lexicographic, A066099). A354905

Expansion of (ψ(x) * ψ(x³) / f(-x³)²)² in powers of·where ψ(), f() are Ramanujan θ functions. A263528

Expansion of ψ(x³)² * f(-x²)⁴ / f(-x)⁶ in powers of where ψ(), f() are Ramanujan θ function. A259033

Number of Latin squares of order 2n with maximum inner distance with fixed entry 1 in cell (1,1). A350453

a(n) = n - the largest Fibonacci number <= n. A66628

Number of nX9 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally. A183341

Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00010001. A260205