680291109 has 8 divisors (see below), whose sum is σ = 1007838720. Its totient is φ = 453527388.

The previous prime is 680291099. The next prime is 680291119. The reversal of 680291109 is 901192086.

It is an interprime number because it is at equal distance from previous prime (680291099) and next prime (680291119).

It is not a de Polignac number, because 680291109 - 2¹¹ = 680289061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680291119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12597957 + ... + 12598010.

It is an arithmetic number, because the mean of its divisors is an integer number (125979840).

Almost surely, 2^680291109 is an apocalyptic number.

It is an amenable number.

680291109 is a deficient number, since it is larger than the sum of its proper divisors (327547611).

680291109 is a wasteful number, since it uses less digits than its factorization.

680291109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25195976 (or 25195970 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 680291109 is about 26082.3907838219. The cubic root of 680291109 is about 879.4914024789.

The spelling of 680291109 in words is "six hundred eighty million, two hundred ninety-one thousand, one hundred nine".