668083682228 has 6 divisors (see below), whose sum is σ = 1169146443906. Its totient is φ = 334041841112.

The previous prime is 668083682141. The next prime is 668083682239. The reversal of 668083682228 is 822286380866.

It can be written as a sum of positive squares in only one way, i.e., 440733998884 + 227349683344 = 663878^2 + 476812^2 .

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, 83510460275 + ... + 83510460282.

It is an arithmetic number, because the mean of its divisors is an integer number (194857740651).

Almost surely, 2^668083682228 is an apocalyptic number.

It is an amenable number.

668083682228 is a deficient number, since it is larger than the sum of its proper divisors (501062761678).

668083682228 is a wasteful number, since it uses less digits than its factorization.

668083682228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167020920561 (or 167020920559 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 59.

The spelling of 668083682228 in words is "six hundred sixty-eight billion, eighty-three million, six hundred eighty-two thousand, two hundred twenty-eight".