668080746699 has 8 divisors (see below), whose sum is σ = 919508984832. Its totient is φ = 431019836520.

The previous prime is 668080746691. The next prime is 668080746757. The reversal of 668080746699 is 996647080866.

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

It is not a de Polignac number, because 668080746699 - 2³ = 668080746691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668080746691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3591831879 + ... + 3591832064.

It is an arithmetic number, because the mean of its divisors is an integer number (114938623104).

Almost surely, 2^668080746699 is an apocalyptic number.

668080746699 is a deficient number, since it is larger than the sum of its proper divisors (251428238133).

668080746699 is a wasteful number, since it uses less digits than its factorization.

668080746699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7183663977.

The product of its (nonzero) digits is 188116992, while the sum is 69.

The spelling of 668080746699 in words is "six hundred sixty-eight billion, eighty million, seven hundred forty-six thousand, six hundred ninety-nine".