680640344122 has 8 divisors (see below), whose sum is σ = 1020972296736. Its totient is φ = 340316245212.

The previous prime is 680640344107. The next prime is 680640344141. The reversal of 680640344122 is 221443046086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741758 + ... + 2096425.

It is an arithmetic number, because the mean of its divisors is an integer number (127621537092).

Almost surely, 2^680640344122 is an apocalyptic number.

680640344122 is a deficient number, since it is larger than the sum of its proper divisors (340331952614).

680640344122 is a wasteful number, since it uses less digits than its factorization.

680640344122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926852.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 680640344122 in words is "six hundred eighty billion, six hundred forty million, three hundred forty-four thousand, one hundred twenty-two".