668088068 has 12 divisors (see below), whose sum is σ = 1206868992. Its totient is φ = 323268360.

The previous prime is 668088053. The next prime is 668088077. The reversal of 668088068 is 860880866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693780 + ... + 2694027.

It is an arithmetic number, because the mean of its divisors is an integer number (100572416).

Almost surely, 2^668088068 is an apocalyptic number.

It is an amenable number.

668088068 is a deficient number, since it is larger than the sum of its proper divisors (538780924).

668088068 is a wasteful number, since it uses less digits than its factorization.

668088068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387842 (or 5387840 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 668088068 is about 25847.3996371008. The cubic root of 668088068 is about 874.2008782354.

The spelling of 668088068 in words is "six hundred sixty-eight million, eighty-eight thousand, sixty-eight".