668584308 has 24 divisors (see below), whose sum is σ = 1782891712. Its totient is φ = 191024064.

The previous prime is 668584291. The next prime is 668584321. The reversal of 668584308 is 803485866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3979585 + ... + 3979752.

Almost surely, 2^668584308 is an apocalyptic number.

It is an amenable number.

668584308 is an abundant number, since it is smaller than the sum of its proper divisors (1114307404).

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

668584308 is a wasteful number, since it uses less digits than its factorization.

668584308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7959351 (or 7959349 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 668584308 is about 25856.9972734655. The cubic root of 668584308 is about 874.4172699059.

The spelling of 668584308 in words is "six hundred sixty-eight million, five hundred eighty-four thousand, three hundred eight".