Properties of the Number 66385

Sixty-Six Thousand Three Hundred Eighty-Five

Basics

Value: 66384 → 66385 → 66386

Parity: odd

Prime: No

Previous Prime: 66383

Next Prime: 66403

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 11 × 17 × 71

Divisors: 1, 5, 11, 17, 55, 71, 85, 187, 355, 781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000001101010001

Octal: 201521

Duodecimal: 32501

Hexadecimal: 10351

Square: 4406968225

Square Root: 257.65286724583524

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

Least k with precisely n partitions k = x + y satisfying σ(k) = σ(x) + σ(y). A211224

Composite squarefree numbers k such that p+1 divides k-1 for any prime p dividing k. A225711

Odd composite integers m such that U(m)² == 1 (mod m) and V(m) == 3 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=3 and b=-1, respectively. A337626

Partial sums of A051865. A50441

Numerators of continued fraction convergents to sqrt(335). A41632

Number of 4 X n 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of the elements above it, modulo 3. A239031

Smallest maximum of sum of 3 consecutive terms in any arrangement of [1..n] in a circle. A66385