668470698 has 32 divisors (see below), whose sum is σ = 1697704320. Its totient is φ = 190991520.

The previous prime is 668470687. The next prime is 668470727. The reversal of 668470698 is 896074866.

668470698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 883843 + ... + 884598.

It is an arithmetic number, because the mean of its divisors is an integer number (53053260).

Almost surely, 2^668470698 is an apocalyptic number.

668470698 is an abundant number, since it is smaller than the sum of its proper divisors (1029233622).

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

668470698 is a wasteful number, since it uses less digits than its factorization.

668470698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768459 (or 1768453 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 668470698 is about 25854.8002893080. The cubic root of 668470698 is about 874.3677382950.

The spelling of 668470698 in words is "six hundred sixty-eight million, four hundred seventy thousand, six hundred ninety-eight".