680096609 has 2 divisors, whose sum is σ = 680096610. Its totient is φ = 680096608.

The previous prime is 680096579. The next prime is 680096623. The reversal of 680096609 is 906690086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625750225 + 54346384 = 25015^2 + 7372^2 .

It is a cyclic number.

It is not a de Polignac number, because 680096609 - 2¹² = 680092513 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 680096609.

It is not a weakly prime, because it can be changed into another prime (680096639) 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 as a sum of consecutive naturals, namely, 340048304 + 340048305.

It is an arithmetic number, because the mean of its divisors is an integer number (340048305).

Almost surely, 2^680096609 is an apocalyptic number.

It is an amenable number.

680096609 is a deficient number, since it is larger than the sum of its proper divisors (1).

680096609 is an equidigital number, since it uses as much as digits as its factorization.

680096609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 680096609 is about 26078.6619480371. The cubic root of 680096609 is about 879.4075769025.

The spelling of 680096609 in words is "six hundred eighty million, ninety-six thousand, six hundred nine".