688935404 has 12 divisors (see below), whose sum is σ = 1276556904. Its totient is φ = 324204864.

The previous prime is 688935371. The next prime is 688935407. The reversal of 688935404 is 404539886.

It is not an unprimeable number, because it can be changed into a prime (688935407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5065634 + ... + 5065769.

It is an arithmetic number, because the mean of its divisors is an integer number (106379742).

Almost surely, 2^688935404 is an apocalyptic number.

It is an amenable number.

688935404 is a deficient number, since it is larger than the sum of its proper divisors (587621500).

688935404 is a wasteful number, since it uses less digits than its factorization.

688935404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10131424 (or 10131422 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 688935404 is about 26247.5790121680. The cubic root of 688935404 is about 883.2008963745.

The spelling of 688935404 in words is "six hundred eighty-eight million, nine hundred thirty-five thousand, four hundred four".