688508630 has 8 divisors (see below), whose sum is σ = 1239315552. Its totient is φ = 275403448.

The previous prime is 688508629. The next prime is 688508651. The reversal of 688508630 is 36805886.

688508630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34425422 + ... + 34425441.

It is an arithmetic number, because the mean of its divisors is an integer number (154914444).

Almost surely, 2^688508630 is an apocalyptic number.

688508630 is a deficient number, since it is larger than the sum of its proper divisors (550806922).

688508630 is a wasteful number, since it uses less digits than its factorization.

688508630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68850870.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 688508630 is about 26239.4479743763. The cubic root of 688508630 is about 883.0184868987.

The spelling of 688508630 in words is "six hundred eighty-eight million, five hundred eight thousand, six hundred thirty".