668355852 has 48 divisors (see below), whose sum is σ = 1572641280. Its totient is φ = 220917312.

The previous prime is 668355829. The next prime is 668355871. The reversal of 668355852 is 258553866.

668355852 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 15 ways as a sum of consecutive naturals, for example, 1138303 + ... + 1138889.

It is an arithmetic number, because the mean of its divisors is an integer number (32763360).

Almost surely, 2^668355852 is an apocalyptic number.

It is an amenable number.

668355852 is an abundant number, since it is smaller than the sum of its proper divisors (904285428).

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

668355852 is a wasteful number, since it uses less digits than its factorization.

668355852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1228 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 48.

The square root of 668355852 is about 25852.5792136878. The cubic root of 668355852 is about 874.3176621092.

The spelling of 668355852 in words is "six hundred sixty-eight million, three hundred fifty-five thousand, eight hundred fifty-two".