668248888 has 16 divisors (see below), whose sum is σ = 1271668680. Its totient is φ = 329137248.

The previous prime is 668248883. The next prime is 668248907. The reversal of 668248888 is 888842866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668248883) 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, 622831 + ... + 623902.

Almost surely, 2^668248888 is an apocalyptic number.

It is an amenable number.

668248888 is a deficient number, since it is larger than the sum of its proper divisors (603419792).

668248888 is a wasteful number, since it uses less digits than its factorization.

668248888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246806 (or 1246802 counting only the distinct ones).

The product of its digits is 9437184, while the sum is 58.

The square root of 668248888 is about 25850.5104011507. The cubic root of 668248888 is about 874.2710175442.

The spelling of 668248888 in words is "six hundred sixty-eight million, two hundred forty-eight thousand, eight hundred eighty-eight".