668272625859 has 8 divisors (see below), whose sum is σ = 898915390992. Its totient is φ = 441572472320.

The previous prime is 668272625843. The next prime is 668272625861. The reversal of 668272625859 is 958526272866.

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 668272625859 - 2⁴ = 668272625843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 668272625859.

It is not an unprimeable number, because it can be changed into a prime (668272625809) 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, 985652502 + ... + 985653179.

It is an arithmetic number, because the mean of its divisors is an integer number (112364423874).

Almost surely, 2^668272625859 is an apocalyptic number.

668272625859 is a deficient number, since it is larger than the sum of its proper divisors (230642765133).

668272625859 is a wasteful number, since it uses less digits than its factorization.

668272625859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971305797.

The product of its digits is 174182400, while the sum is 66.

The spelling of 668272625859 in words is "six hundred sixty-eight billion, two hundred seventy-two million, six hundred twenty-five thousand, eight hundred fifty-nine".