668330244884 has 6 divisors (see below), whose sum is σ = 1169577928554. Its totient is φ = 334165122440.

The previous prime is 668330244851. The next prime is 668330244899. The reversal of 668330244884 is 488442033866.

It can be written as a sum of positive squares in only one way, i.e., 458840954884 + 209489290000 = 677378^2 + 457700^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83541280607 + ... + 83541280614.

It is an arithmetic number, because the mean of its divisors is an integer number (194929654759).

Almost surely, 2^668330244884 is an apocalyptic number.

It is an amenable number.

668330244884 is a deficient number, since it is larger than the sum of its proper divisors (501247683670).

668330244884 is a wasteful number, since it uses less digits than its factorization.

668330244884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167082561225 (or 167082561223 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 56.

The spelling of 668330244884 in words is "six hundred sixty-eight billion, three hundred thirty million, two hundred forty-four thousand, eight hundred eighty-four".