688752608 has 12 divisors (see below), whose sum is σ = 1355981760. Its totient is φ = 344376288.

The previous prime is 688752601. The next prime is 688752643. The reversal of 688752608 is 806257886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688752601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10761728 + ... + 10761791.

It is an arithmetic number, because the mean of its divisors is an integer number (112998480).

Almost surely, 2^688752608 is an apocalyptic number.

It is an amenable number.

688752608 is a deficient number, since it is larger than the sum of its proper divisors (667229152).

688752608 is a wasteful number, since it uses less digits than its factorization.

688752608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21523529 (or 21523521 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 688752608 is about 26244.0966314331. The cubic root of 688752608 is about 883.1227759048.

It can be divided in two parts, 6887 and 52608, that added together give a palindrome (59495).

The spelling of 688752608 in words is "six hundred eighty-eight million, seven hundred fifty-two thousand, six hundred eight".