680066806680 has 48 divisors (see below), whose sum is σ = 2210217122880. Its totient is φ = 181351148352.

The previous prime is 680066806663. The next prime is 680066806687. The reversal of 680066806680 is 86608660086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680066806687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 944536872 + ... + 944537591.

It is an arithmetic number, because the mean of its divisors is an integer number (46046190060).

Almost surely, 2^680066806680 is an apocalyptic number.

680066806680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680066806680 is an abundant number, since it is smaller than the sum of its proper divisors (1530150316200).

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

680066806680 is a wasteful number, since it uses less digits than its factorization.

680066806680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889074480 (or 1889074473 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 680066806680 in words is "six hundred eighty billion, sixty-six million, eight hundred six thousand, six hundred eighty".