With this information, you can calculate the quantity of square meters 684 square kilometers is equal to.

¿What is the inverse calculation between 1 square meter and 684 square kilometers?

Performing the inverse calculation of the relationship between units, we obtain that 1 square meter is 1.4619883e-09 times 684 square kilometers.

Which is the same to say that 684 square kilometers is 6.84e+08 square meters.

Six hundred eighty-four square kilometers equals to six square meters. *Approximation

A square meter is one times six hundred eighty-four square kilometers. *Approximation