680805702 has 16 divisors (see below), whose sum is σ = 1512901680. Its totient is φ = 226935216.

The previous prime is 680805691. The next prime is 680805703. The reversal of 680805702 is 207508086.

680805702 is a `hidden beast` number, since 6 + 8 + 0 + 80 + 570 + 2 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680805703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6303703 + ... + 6303810.

It is an arithmetic number, because the mean of its divisors is an integer number (94556355).

Almost surely, 2^680805702 is an apocalyptic number.

680805702 is an abundant number, since it is smaller than the sum of its proper divisors (832095978).

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

680805702 is a wasteful number, since it uses less digits than its factorization.

680805702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12607524 (or 12607518 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 680805702 is about 26092.2536780555. The cubic root of 680805702 is about 879.7131046522.

The spelling of 680805702 in words is "six hundred eighty million, eight hundred five thousand, seven hundred two".