680746674068 has 12 divisors (see below), whose sum is σ = 1261383543252. Its totient is φ = 320351376000.

The previous prime is 680746674067. The next prime is 680746674077. The reversal of 680746674068 is 860476647086.

It can be written as a sum of positive squares in 2 ways, for example, as 387695513104 + 293051160964 = 622652^2 + 541342^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 680746674068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680746674067) 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, 5005490183 + ... + 5005490318.

It is an arithmetic number, because the mean of its divisors is an integer number (105115295271).

Almost surely, 2^680746674068 is an apocalyptic number.

680746674068 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

680746674068 is a deficient number, since it is larger than the sum of its proper divisors (580636869184).

680746674068 is a wasteful number, since it uses less digits than its factorization.

680746674068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010980522 (or 10010980520 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 62.

The spelling of 680746674068 in words is "six hundred eighty billion, seven hundred forty-six million, six hundred seventy-four thousand, sixty-eight".