668358168 has 16 divisors (see below), whose sum is σ = 1670895480. Its totient is φ = 222786048.

The previous prime is 668358167. The next prime is 668358181. The reversal of 668358168 is 861853866.

668358168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 668358168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668358161) 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, 13924105 + ... + 13924152.

Almost surely, 2^668358168 is an apocalyptic number.

It is an amenable number.

668358168 is an abundant number, since it is smaller than the sum of its proper divisors (1002537312).

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

668358168 is a wasteful number, since it uses less digits than its factorization.

668358168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27848266 (or 27848262 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 668358168 is about 25852.6240060850. The cubic root of 668358168 is about 874.3186720090.

The spelling of 668358168 in words is "six hundred sixty-eight million, three hundred fifty-eight thousand, one hundred sixty-eight".