Properties of the Number 66600

Sixty-Six Thousand Six Hundred

Basics

Value: 66599 → 66600 → 66601

Parity: even

Prime: No

Previous Prime: 66593

Next Prime: 66601

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 5 ² × 37

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010000101000

Octal: 202050

Duodecimal: 32660

Hexadecimal: 10428

Square: 4435560000

Square Root: 258.0697580112788

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

Numbers whose set of base-10 digits is {0,6}. A204093

Integers k such that there are i groups of order k+i up to isomorphism, for i=1,2,3. A373649

Integers k such that there are i groups of order k+i up to isomorphism, for i=1,2,3,4. A373650

Numbers k such that 2k+1, 4k+1, 6k+1 and 8k+1 are primes. A124409

Numbers with prime factorization p·q²*r²*s³ (where p, q, r, s are distinct primes). A190109

The number of edges on a concave circular triangle formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. A340687

Lower triangular array, called S1hat(-5), related to partition number array A145372. A145373

E.g.f. satisfies A(x) = 1/(1 - x)^2·A(x). A355779

Numbers k such that k and k² use only the digits 0, 3, 4, 5 and 6. A136927

Experience Points thresholds for levels in the pen and paper role-playing game "Das Schwarze Auge" (DSA, a.k.a. "The Dark Eye"). A124437