6688604 has 24 divisors (see below), whose sum is σ = 12677280. Its totient is φ = 3069504.

The previous prime is 6688603. The next prime is 6688631. The reversal of 6688604 is 4068866.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688603) 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, 15017 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (528220).

Almost surely, 2^6688604 is an apocalyptic number.

It is an amenable number.

6688604 is a deficient number, since it is larger than the sum of its proper divisors (5988676).

6688604 is a wasteful number, since it uses less digits than its factorization.

6688604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 6688604 is about 2586.2335548051. The cubic root of 6688604 is about 188.4134179645.

The spelling of 6688604 in words is "six million, six hundred eighty-eight thousand, six hundred four".