6646

6646 is a natural number that follows 6645 and precedes 6647. It is even and composite, with prime factorization 2 × 3323; the number 3323 is prime. Consequently, the divisors of 6646 are 1, 2, 3323, and 6646.

In various representations, 6646 appears as 1100111110110 in binary, 14766 in octal, and 0x19F6 in hexadecimal. The sum of its decimal digits is 22, so the number is not divisible by 3 or 9, and it is not divisible by 5. It is also not a perfect square or a perfect cube, and it is not a prime. As a semiprime, it has exactly four positive divisors.

In mathematics, 6646 can be described as a semiprime, being the product of two primes. Its modular properties include 6646 ≡ 4 (mod 9) and 6646 ≡ 3 (mod 7).

Beyond pure number theory, 6646 may appear as an identifier in catalogs, part numbers, area codes in specific datasets, or other designation contexts, but there is no widely standardized meaning associated with the number itself.