668000006813 has 8 divisors (see below), whose sum is σ = 688490811456. Its totient is φ = 647709112800.

The previous prime is 668000006803. The next prime is 668000006819. The reversal of 668000006813 is 318600000866.

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

It is a cyclic number.

It is not a de Polignac number, because 668000006813 - 2⁶ = 668000006749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668000006819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 49970873 + ... + 49984238.

It is an arithmetic number, because the mean of its divisors is an integer number (86061351432).

Almost surely, 2^668000006813 is an apocalyptic number.

It is an amenable number.

668000006813 is a deficient number, since it is larger than the sum of its proper divisors (20490804643).

668000006813 is a wasteful number, since it uses less digits than its factorization.

668000006813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99955315.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 668000006813 in words is "six hundred sixty-eight billion, six thousand, eight hundred thirteen".