680666807480 has 32 divisors (see below), whose sum is σ = 1670727619440. Its totient is φ = 247515202560.

The previous prime is 680666807389. The next prime is 680666807489. The reversal of 680666807480 is 84708666086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680666807489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773484569 + ... + 773485448.

Almost surely, 2^680666807480 is an apocalyptic number.

It is an amenable number.

680666807480 is an abundant number, since it is smaller than the sum of its proper divisors (990060811960).

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

680666807480 is a wasteful number, since it uses less digits than its factorization.

680666807480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546970039 (or 1546970035 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 680666807480 in words is "six hundred eighty billion, six hundred sixty-six million, eight hundred seven thousand, four hundred eighty".