680537050864208 has 40 divisors (see below), whose sum is σ = 1318921027380768. Its totient is φ = 340170344260992.

The previous prime is 680537050864201. The next prime is 680537050864243. The reversal of 680537050864208 is 802468050735086.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680537050864201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108270835 + ... + 1108884717.

Almost surely, 2^{680537050864208} is an apocalyptic number.

It is an amenable number.

680537050864208 is a deficient number, since it is larger than the sum of its proper divisors (638383976516560).

680537050864208 is a wasteful number, since it uses less digits than its factorization.

680537050864208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633771 (or 633765 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 62.

The spelling of 680537050864208 in words is "six hundred eighty trillion, five hundred thirty-seven billion, fifty million, eight hundred sixty-four thousand, two hundred eight".