688872304 has 20 divisors (see below), whose sum is σ = 1340525560. Its totient is φ = 342930240.

The previous prime is 688872299. The next prime is 688872307. The reversal of 688872304 is 403278886.

688872304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688872307) 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, 90342 + ... + 97669.

It is an arithmetic number, because the mean of its divisors is an integer number (67026278).

Almost surely, 2^688872304 is an apocalyptic number.

It is an amenable number.

688872304 is a deficient number, since it is larger than the sum of its proper divisors (651653256).

688872304 is a wasteful number, since it uses less digits than its factorization.

688872304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188248 (or 188242 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 688872304 is about 26246.3769690218. The cubic root of 688872304 is about 883.1739312542.

The spelling of 688872304 in words is "six hundred eighty-eight million, eight hundred seventy-two thousand, three hundred four".