680684407748 has 6 divisors (see below), whose sum is σ = 1191197713566. Its totient is φ = 340342203872.

The previous prime is 680684407723. The next prime is 680684407759. The reversal of 680684407748 is 847704486086.

It can be written as a sum of positive squares in only one way, i.e., 650439024004 + 30245383744 = 806498^2 + 173912^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85085550965 + ... + 85085550972.

It is an arithmetic number, because the mean of its divisors is an integer number (198532952261).

Almost surely, 2^680684407748 is an apocalyptic number.

It is an amenable number.

680684407748 is a deficient number, since it is larger than the sum of its proper divisors (510513305818).

680684407748 is a wasteful number, since it uses less digits than its factorization.

680684407748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170171101941 (or 170171101939 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 62.

The spelling of 680684407748 in words is "six hundred eighty billion, six hundred eighty-four million, four hundred seven thousand, seven hundred forty-eight".