Properties of the Number 66438

Sixty-Six Thousand Four Hundred Thirty-Eight

Basics

Value: 66437 → 66438 → 66439

Parity: even

Prime: No

Previous Prime: 66431

Next Prime: 66449

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 3691

Divisors: 1, 2, 3, 6, 9, 18, 3691, 7382, 11073, 22146

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001110000110

Octal: 201606

Duodecimal: 32546

Hexadecimal: 10386

Square: 4414007844

Square Root: 257.75569828812706

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

Smith numbers of order 3. A178213

a(n) = (n+1)*(n+2)²*(n+3)*(11·n³ + 58·n² + 101·n + 60)/720. A108646

Numbers n such that A277118(n) = 15. A277512

Positive numbers whose square starts and ends with exactly 44, and no 444. A348831

Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 00100-00100-11111 pattern in any orientation. A146997

a(n) = 7ⁿ mod n. A66438