688829356 has 24 divisors (see below), whose sum is σ = 1236733344. Its totient is φ = 335502720.

The previous prime is 688829279. The next prime is 688829359. The reversal of 688829356 is 653928886.

It is a happy number.

688829356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 688829297 and 688829306.

It is not an unprimeable number, because it can be changed into a prime (688829359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119026 + ... + 124678.

It is an arithmetic number, because the mean of its divisors is an integer number (51530556).

Almost surely, 2^688829356 is an apocalyptic number.

It is an amenable number.

688829356 is a deficient number, since it is larger than the sum of its proper divisors (547903988).

688829356 is a wasteful number, since it uses less digits than its factorization.

688829356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6441 (or 6439 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 688829356 is about 26245.5587862023. The cubic root of 688829356 is about 883.1555769370.

The spelling of 688829356 in words is "six hundred eighty-eight million, eight hundred twenty-nine thousand, three hundred fifty-six".