668668882 has 16 divisors (see below), whose sum is σ = 1167918912. Its totient is φ = 281165040.

The previous prime is 668668879. The next prime is 668668909. The reversal of 668668882 is 288866866.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449844 + ... + 451327.

It is an arithmetic number, because the mean of its divisors is an integer number (72994932).

Almost surely, 2^668668882 is an apocalyptic number.

668668882 is a deficient number, since it is larger than the sum of its proper divisors (499250030).

668668882 is a wasteful number, since it uses less digits than its factorization.

668668882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901233.

The product of its digits is 10616832, while the sum is 58.

The square root of 668668882 is about 25858.6326397975. The cubic root of 668668882 is about 874.4541387781.

The spelling of 668668882 in words is "six hundred sixty-eight million, six hundred sixty-eight thousand, eight hundred eighty-two".