668603802830 has 8 divisors (see below), whose sum is σ = 1203486845112. Its totient is φ = 267441521128.

The previous prime is 668603802829. The next prime is 668603802833. The reversal of 668603802830 is 38208306866.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668603802833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33430190132 + ... + 33430190151.

It is an arithmetic number, because the mean of its divisors is an integer number (150435855639).

Almost surely, 2^668603802830 is an apocalyptic number.

668603802830 is a deficient number, since it is larger than the sum of its proper divisors (534883042282).

668603802830 is a wasteful number, since it uses less digits than its factorization.

668603802830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66860380290.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 668603802830 in words is "six hundred sixty-eight billion, six hundred three million, eight hundred two thousand, eight hundred thirty".