668358 has 16 divisors (see below), whose sum is σ = 1485360. Its totient is φ = 222768.

The previous prime is 668347. The next prime is 668407. The reversal of 668358 is 853866.

It is a congruent number.

It is an unprimeable number.

668358 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6135 + ... + 6242.

It is an arithmetic number, because the mean of its divisors is an integer number (92835).

2⁶⁶⁸³⁵⁸ is an apocalyptic number.

668358 is an abundant number, since it is smaller than the sum of its proper divisors (817002).

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

668358 is a wasteful number, since it uses less digits than its factorization.

668358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12388 (or 12382 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 668358 is about 817.5316507634. The cubic root of 668358 is about 87.4318598752.

The spelling of 668358 in words is "six hundred sixty-eight thousand, three hundred fifty-eight".