6639068 has 24 divisors (see below), whose sum is σ = 11952864. Its totient is φ = 3225600.

The previous prime is 6639067. The next prime is 6639077. The reversal of 6639068 is 8609366.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6639067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27428 + ... + 27668.

It is an arithmetic number, because the mean of its divisors is an integer number (498036).

Almost surely, 2^6639068 is an apocalyptic number.

It is an amenable number.

6639068 is a deficient number, since it is larger than the sum of its proper divisors (5313796).

6639068 is a wasteful number, since it uses less digits than its factorization.

6639068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6639068 is about 2576.6388959262. The cubic root of 6639068 is about 187.9471331657.

The spelling of 6639068 in words is "six million, six hundred thirty-nine thousand, sixty-eight".