With this information, you can calculate the quantity of hours 684 days is equal to.
¿What is the inverse calculation between 1 hour and 684 days?
Performing the inverse calculation of the relationship between units, we obtain that 1 hour is 6.0916179e-05 times 684 days.
Which is the same to say that 684 days is 16416 hours.
Six hundred eighty-four days equals to sixteen thousand four hundred sixteen hours. *Approximation
A hour is six times six hundred eighty-four days. *Approximation