668584 has 16 divisors (see below), whose sum is σ = 1432800. Its totient is φ = 286512.

The previous prime is 668581. The next prime is 668599. The reversal of 668584 is 485866.

It is not an unprimeable number, because it can be changed into a prime (668581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5914 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (89550).

2⁶⁶⁸⁵⁸⁴ is an apocalyptic number.

It is an amenable number.

668584 is an abundant number, since it is smaller than the sum of its proper divisors (764216).

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

668584 is a wasteful number, since it uses less digits than its factorization.

668584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11952 (or 11948 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 668584 is about 817.6698600291. The cubic root of 668584 is about 87.4417135632.

The spelling of 668584 in words is "six hundred sixty-eight thousand, five hundred eighty-four".