668297 has 4 divisors (see below), whose sum is σ = 763776. Its totient is φ = 572820.

The previous prime is 668273. The next prime is 668303. The reversal of 668297 is 792866.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 668297 - 2¹⁰ = 667273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 668297.

It is not an unprimeable number, because it can be changed into a prime (608297) 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, 47729 + ... + 47742.

It is an arithmetic number, because the mean of its divisors is an integer number (190944).

2⁶⁶⁸²⁹⁷ is an apocalyptic number.

It is an amenable number.

668297 is a deficient number, since it is larger than the sum of its proper divisors (95479).

668297 is an equidigital number, since it uses as much as digits as its factorization.

668297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95478.

The product of its digits is 36288, while the sum is 38.

The square root of 668297 is about 817.4943424881. The cubic root of 668297 is about 87.4291998708.

The spelling of 668297 in words is "six hundred sixty-eight thousand, two hundred ninety-seven".