668774470 has 128 divisors (see below), whose sum is σ = 1549320192. Its totient is φ = 202176000.

The previous prime is 668774459. The next prime is 668774479. The reversal of 668774470 is 74477866.

668774470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668774479) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4259632 + ... + 4259788.

It is an arithmetic number, because the mean of its divisors is an integer number (12104064).

Almost surely, 2^668774470 is an apocalyptic number.

668774470 is an abundant number, since it is smaller than the sum of its proper divisors (880545722).

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

668774470 is a wasteful number, since it uses less digits than its factorization.

668774470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The square root of 668774470 is about 25860.6741984814. The cubic root of 668774470 is about 874.5001640513.

The spelling of 668774470 in words is "six hundred sixty-eight million, seven hundred seventy-four thousand, four hundred seventy".