6640604 has 12 divisors (see below), whose sum is σ = 11641224. Its totient is φ = 3314544.

The previous prime is 6640597. The next prime is 6640631. The reversal of 6640604 is 4060466.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2147 + ... + 4229.

It is an arithmetic number, because the mean of its divisors is an integer number (970102).

Almost surely, 2^6640604 is an apocalyptic number.

It is an amenable number.

6640604 is a deficient number, since it is larger than the sum of its proper divisors (5000620).

6640604 is a wasteful number, since it uses less digits than its factorization.

6640604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884 (or 2882 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 6640604 is about 2576.9369414093. The cubic root of 6640604 is about 187.9616263915.

The spelling of 6640604 in words is "six million, six hundred forty thousand, six hundred four".