666668104695 has 32 divisors (see below), whose sum is σ = 1188234590400. Its totient is φ = 354642268032.

The previous prime is 666668104691. The next prime is 666668104747. The reversal of 666668104695 is 596401866666.

It is not a de Polignac number, because 666668104695 - 2² = 666668104691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666668104691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6294892 + ... + 6399921.

It is an arithmetic number, because the mean of its divisors is an integer number (37132330950).

Almost surely, 2^666668104695 is an apocalyptic number.

666668104695 is a deficient number, since it is larger than the sum of its proper divisors (521566485705).

666668104695 is a wasteful number, since it uses less digits than its factorization.

666668104695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12695216 (or 12695210 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 666668104695 in words is "six hundred sixty-six billion, six hundred sixty-eight million, one hundred four thousand, six hundred ninety-five".