668283061756 has 48 divisors (see below), whose sum is σ = 1258092380160. Its totient is φ = 309609933120.

The previous prime is 668283061669. The next prime is 668283061759. The reversal of 668283061756 is 657160382866.

It is a self number, because there is not a number n which added to its sum of digits gives 668283061756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668283061759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5270341 + ... + 5395651.

It is an arithmetic number, because the mean of its divisors is an integer number (26210257920).

Almost surely, 2^668283061756 is an apocalyptic number.

It is an amenable number.

668283061756 is a deficient number, since it is larger than the sum of its proper divisors (589809318404).

668283061756 is a wasteful number, since it uses less digits than its factorization.

668283061756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126874 (or 126872 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 668283061756 in words is "six hundred sixty-eight billion, two hundred eighty-three million, sixty-one thousand, seven hundred fifty-six".