656647668714 has 16 divisors (see below), whose sum is σ = 1313304020928. Its totient is φ = 218881108992.

The previous prime is 656647668707. The next prime is 656647668727. The reversal of 656647668714 is 417866746656.

It is an unprimeable number.

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, 1037619 + ... + 1545945.

It is an arithmetic number, because the mean of its divisors is an integer number (82081501308).

Almost surely, 2^656647668714 is an apocalyptic number.

656647668714 is an abundant number, since it is smaller than the sum of its proper divisors (656656352214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656647668714 is a wasteful number, since it uses less digits than its factorization.

656647668714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723629.

The product of its digits is 243855360, while the sum is 66.

The spelling of 656647668714 in words is "six hundred fifty-six billion, six hundred forty-seven million, six hundred sixty-eight thousand, seven hundred fourteen".