6643108 has 12 divisors (see below), whose sum is σ = 11648560. Its totient is φ = 3314952.

The previous prime is 6643097. The next prime is 6643111. The reversal of 6643108 is 8013466.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135 + ... + 3817.

Almost surely, 2^6643108 is an apocalyptic number.

It is an amenable number.

6643108 is a deficient number, since it is larger than the sum of its proper divisors (5005452).

6643108 is a wasteful number, since it uses less digits than its factorization.

6643108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6643108 is about 2577.4227437500. The cubic root of 6643108 is about 187.9852485785.

The spelling of 6643108 in words is "six million, six hundred forty-three thousand, one hundred eight".