668384863004 has 12 divisors (see below), whose sum is σ = 1194560181024. Its totient is φ = 327081954144.

The previous prime is 668384862991. The next prime is 668384863019. The reversal of 668384863004 is 400368483866.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1777619129 + ... + 1777619504.

It is an arithmetic number, because the mean of its divisors is an integer number (99546681752).

Almost surely, 2^668384863004 is an apocalyptic number.

It is an amenable number.

668384863004 is a deficient number, since it is larger than the sum of its proper divisors (526175318020).

668384863004 is a wasteful number, since it uses less digits than its factorization.

668384863004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555238684 (or 3555238682 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 56.

The spelling of 668384863004 in words is "six hundred sixty-eight billion, three hundred eighty-four million, eight hundred sixty-three thousand, four".