6643882 has 16 divisors (see below), whose sum is σ = 11989440. Its totient is φ = 2697408.

The previous prime is 6643859. The next prime is 6643883. The reversal of 6643882 is 2883466.

It is not an unprimeable number, because it can be changed into a prime (6643883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12223 + ... + 12754.

It is an arithmetic number, because the mean of its divisors is an integer number (749340).

Almost surely, 2^6643882 is an apocalyptic number.

6643882 is a deficient number, since it is larger than the sum of its proper divisors (5345558).

6643882 is a wasteful number, since it uses less digits than its factorization.

6643882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25005.

The product of its digits is 55296, while the sum is 37.

The square root of 6643882 is about 2577.5728893670. The cubic root of 6643882 is about 187.9925491238.

The spelling of 6643882 in words is "six million, six hundred forty-three thousand, eight hundred eighty-two".