688068117 has 24 divisors (see below), whose sum is σ = 1097965440. Its totient is φ = 411727680.

The previous prime is 688068113. The next prime is 688068127. The reversal of 688068117 is 711860886.

It is not a de Polignac number, because 688068117 - 2² = 688068113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688068113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36168 + ... + 51809.

It is an arithmetic number, because the mean of its divisors is an integer number (45748560).

Almost surely, 2^688068117 is an apocalyptic number.

It is an amenable number.

688068117 is a deficient number, since it is larger than the sum of its proper divisors (409897323).

688068117 is a wasteful number, since it uses less digits than its factorization.

688068117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88073 (or 88070 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 688068117 is about 26231.0525332096. The cubic root of 688068117 is about 882.8301260983.

The spelling of 688068117 in words is "six hundred eighty-eight million, sixty-eight thousand, one hundred seventeen".