668298 has 16 divisors (see below), whose sum is σ = 1380096. Its totient is φ = 215520.

The previous prime is 668273. The next prime is 668303. The reversal of 668298 is 892866.

It is a Curzon number.

It is an unprimeable number.

668298 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, 1611 + ... + 1982.

It is an arithmetic number, because the mean of its divisors is an integer number (86256).

2⁶⁶⁸²⁹⁸ is an apocalyptic number.

668298 is an abundant number, since it is smaller than the sum of its proper divisors (711798).

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

668298 is a wasteful number, since it uses less digits than its factorization.

668298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629.

The product of its digits is 41472, while the sum is 39.

The square root of 668298 is about 817.4949541129. The cubic root of 668298 is about 87.4292434787.

The spelling of 668298 in words is "six hundred sixty-eight thousand, two hundred ninety-eight".