680760560 has 20 divisors (see below), whose sum is σ = 1582768488. Its totient is φ = 272304192.

The previous prime is 680760559. The next prime is 680760569. The reversal of 680760560 is 65067086.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680760569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4254674 + ... + 4254833.

Almost surely, 2^680760560 is an apocalyptic number.

It is an amenable number.

680760560 is an abundant number, since it is smaller than the sum of its proper divisors (902007928).

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

680760560 is a wasteful number, since it uses less digits than its factorization.

680760560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8509520 (or 8509514 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 680760560 is about 26091.3886177030. The cubic root of 680760560 is about 879.6936605893.

The spelling of 680760560 in words is "six hundred eighty million, seven hundred sixty thousand, five hundred sixty".