688314838 has 8 divisors (see below), whose sum is σ = 1032799032. Its totient is φ = 344048496.

The previous prime is 688314833. The next prime is 688314863. The reversal of 688314838 is 838413886.

688314838 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 junction number, because it is equal to n+sod(n) for n = 688314791 and 688314800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688314833) 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, 46320 + ... + 59347.

It is an arithmetic number, because the mean of its divisors is an integer number (129099879).

Almost surely, 2^688314838 is an apocalyptic number.

688314838 is a deficient number, since it is larger than the sum of its proper divisors (344484194).

688314838 is a wasteful number, since it uses less digits than its factorization.

688314838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108926.

The product of its digits is 884736, while the sum is 49.

The square root of 688314838 is about 26235.7549538793. The cubic root of 688314838 is about 882.9356324658.

The spelling of 688314838 in words is "six hundred eighty-eight million, three hundred fourteen thousand, eight hundred thirty-eight".