668080068 has 24 divisors (see below), whose sum is σ = 1565727072. Its totient is φ = 221711424.

The previous prime is 668080037. The next prime is 668080079. The reversal of 668080068 is 860080866.

668080068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119905 + ... + 125352.

It is an arithmetic number, because the mean of its divisors is an integer number (65238628).

Almost surely, 2^668080068 is an apocalyptic number.

It is an amenable number.

668080068 is an abundant number, since it is smaller than the sum of its proper divisors (897647004).

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

668080068 is a wasteful number, since it uses less digits than its factorization.

668080068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245491 (or 245489 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 668080068 is about 25847.2448821920. The cubic root of 668080068 is about 874.1973888576.

The spelling of 668080068 in words is "six hundred sixty-eight million, eighty thousand, sixty-eight".