668374472 has 16 divisors (see below), whose sum is σ = 1253761740. Its totient is φ = 334038016.

The previous prime is 668374433. The next prime is 668374489. The reversal of 668374472 is 274473866.

It can be written as a sum of positive squares in 2 ways, for example, as 598585156 + 69789316 = 24466^2 + 8354^2 .

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, 1688 + ... + 36600.

Almost surely, 2^668374472 is an apocalyptic number.

It is an amenable number.

668374472 is a deficient number, since it is larger than the sum of its proper divisors (585387268).

668374472 is a wasteful number, since it uses less digits than its factorization.

668374472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37312 (or 37308 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 47.

The square root of 668374472 is about 25852.9393299872. The cubic root of 668374472 is about 874.3257813587.

The spelling of 668374472 in words is "six hundred sixty-eight million, three hundred seventy-four thousand, four hundred seventy-two".