668748888 has 24 divisors (see below), whose sum is σ = 1811195100. Its totient is φ = 222916272.

The previous prime is 668748881. The next prime is 668748901. The reversal of 668748888 is 888847866.

668748888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668748881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4644018 + ... + 4644161.

Almost surely, 2^668748888 is an apocalyptic number.

It is an amenable number.

668748888 is an abundant number, since it is smaller than the sum of its proper divisors (1142446212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668748888 is a wasteful number, since it uses less digits than its factorization.

668748888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9288191 (or 9288184 counting only the distinct ones).

The product of its digits is 33030144, while the sum is 63.

The square root of 668748888 is about 25860.1795817430. The cubic root of 668748888 is about 874.4890134321.

The spelling of 668748888 in words is "six hundred sixty-eight million, seven hundred forty-eight thousand, eight hundred eighty-eight".