668307 has 8 divisors (see below), whose sum is σ = 894976. Its totient is φ = 443592.

The previous prime is 668303. The next prime is 668347. The reversal of 668307 is 703866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 668307 - 2² = 668303 is a prime.

It is the 818-th Hogben number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668307.

It is not an unprimeable number, because it can be changed into a prime (668303) by changing a digit.

It is a nontrivial repunit in base 817.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798 + ... + 1404.

It is an arithmetic number, because the mean of its divisors is an integer number (111872).

2⁶⁶⁸³⁰⁷ is an apocalyptic number.

668307 is a deficient number, since it is larger than the sum of its proper divisors (226669).

668307 is a wasteful number, since it uses less digits than its factorization.

668307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 668307 is about 817.5004587155. The cubic root of 668307 is about 87.4296359482.

The spelling of 668307 in words is "six hundred sixty-eight thousand, three hundred seven".