680317789 has 2 divisors, whose sum is σ = 680317790. Its totient is φ = 680317788.

The previous prime is 680317783. The next prime is 680317823. The reversal of 680317789 is 987713086.

680317789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 679905625 + 412164 = 26075^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 680317789 - 2⁹ = 680317277 is a prime.

It is a super-3 number, since 3×680317789³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680317783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340158894 + 340158895.

It is an arithmetic number, because the mean of its divisors is an integer number (340158895).

Almost surely, 2^680317789 is an apocalyptic number.

It is an amenable number.

680317789 is a deficient number, since it is larger than the sum of its proper divisors (1).

680317789 is an equidigital number, since it uses as much as digits as its factorization.

680317789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 680317789 is about 26082.9022349891. The cubic root of 680317789 is about 879.5028997745.

The spelling of 680317789 in words is "six hundred eighty million, three hundred seventeen thousand, seven hundred eighty-nine".