680066020 has 24 divisors (see below), whose sum is σ = 1428751800. Its totient is φ = 271909632.

The previous prime is 680065963. The next prime is 680066041. The reversal of 680066020 is 20660086.

It is a happy number.

680066020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 400240036 + 279825984 = 20006^2 + 16728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 680066020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52336 + ... + 64024.

It is an arithmetic number, because the mean of its divisors is an integer number (59531325).

Almost surely, 2^680066020 is an apocalyptic number.

It is an amenable number.

680066020 is an abundant number, since it is smaller than the sum of its proper divisors (748685780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680066020 is a wasteful number, since it uses less digits than its factorization.

680066020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14607 (or 14605 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 680066020 is about 26078.0754658008. The cubic root of 680066020 is about 879.3943922063.

The spelling of 680066020 in words is "six hundred eighty million, sixty-six thousand, twenty".