668572307 has 8 divisors (see below), whose sum is σ = 720535200. Its totient is φ = 616685760.

The previous prime is 668572301. The next prime is 668572327. The reversal of 668572307 is 703275866.

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

It is a cyclic number.

It is not a de Polignac number, because 668572307 - 2⁴ = 668572291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668572301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194 + ... + 36567.

It is an arithmetic number, because the mean of its divisors is an integer number (90066900).

Almost surely, 2^668572307 is an apocalyptic number.

668572307 is a deficient number, since it is larger than the sum of its proper divisors (51962893).

668572307 is a wasteful number, since it uses less digits than its factorization.

668572307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38173.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 668572307 is about 25856.7652075816. The cubic root of 668572307 is about 874.4120379831.

The spelling of 668572307 in words is "six hundred sixty-eight million, five hundred seventy-two thousand, three hundred seven".