668328276824 has 32 divisors (see below), whose sum is σ = 1349609661120. Its totient is φ = 308436201216.

The previous prime is 668328276793. The next prime is 668328276851. The reversal of 668328276824 is 428672823866.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1203212 + ... + 1668644.

It is an arithmetic number, because the mean of its divisors is an integer number (42175301910).

Almost surely, 2^668328276824 is an apocalyptic number.

It is an amenable number.

668328276824 is an abundant number, since it is smaller than the sum of its proper divisors (681281384296).

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

668328276824 is a wasteful number, since it uses less digits than its factorization.

668328276824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479259 (or 479255 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 62.

The spelling of 668328276824 in words is "six hundred sixty-eight billion, three hundred twenty-eight million, two hundred seventy-six thousand, eight hundred twenty-four".