668004474 has 32 divisors (see below), whose sum is σ = 1364221440. Its totient is φ = 217984832.

The previous prime is 668004439. The next prime is 668004499. The reversal of 668004474 is 474400866.

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, 159799 + ... + 163925.

It is an arithmetic number, because the mean of its divisors is an integer number (42631920).

Almost surely, 2^668004474 is an apocalyptic number.

668004474 is an abundant number, since it is smaller than the sum of its proper divisors (696216966).

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

668004474 is a wasteful number, since it uses less digits than its factorization.

668004474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694.

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 668004474 is about 25845.7825186238. The cubic root of 668004474 is about 874.1644154795.

The spelling of 668004474 in words is "six hundred sixty-eight million, four thousand, four hundred seventy-four".