668884106 has 16 divisors (see below), whose sum is σ = 1097046720. Its totient is φ = 303341280.

The previous prime is 668884087. The next prime is 668884109. The reversal of 668884106 is 601488866.

It is not an unprimeable number, because it can be changed into a prime (668884109) by changing a digit.

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, 24971 + ... + 44286.

It is an arithmetic number, because the mean of its divisors is an integer number (68565420).

Almost surely, 2^668884106 is an apocalyptic number.

668884106 is a deficient number, since it is larger than the sum of its proper divisors (428162614).

668884106 is a wasteful number, since it uses less digits than its factorization.

668884106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69709.

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 668884106 is about 25862.7938552663. The cubic root of 668884106 is about 874.5479487010.

The spelling of 668884106 in words is "six hundred sixty-eight million, eight hundred eighty-four thousand, one hundred six".