680703468520 has 32 divisors (see below), whose sum is σ = 1537937941320. Its totient is φ = 271151585280.

The previous prime is 680703468499. The next prime is 680703468541. The reversal of 680703468520 is 25864307086.

It is an interprime number because it is at equal distance from previous prime (680703468499) and next prime (680703468541).

It can be written as a sum of positive squares in 4 ways, for example, as 513077094436 + 167626374084 = 716294^2 + 409422^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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, 35296557 + ... + 35315836.

Almost surely, 2^680703468520 is an apocalyptic number.

It is an amenable number.

680703468520 is an abundant number, since it is smaller than the sum of its proper divisors (857234472800).

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

680703468520 is a wasteful number, since it uses less digits than its factorization.

680703468520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70612645 (or 70612641 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 680703468520 in words is "six hundred eighty billion, seven hundred three million, four hundred sixty-eight thousand, five hundred twenty".