According to Newton's Law of Universal Gravitation, the gravitational force F between two particles with masses M and m separated by a distance r is given by:
To find the force that you feel from the Earth, replace the value of the gravitational constant G, as well as M=6*10^24kg, m=65kg and r=6.4*10^6m:
![\begin{gathered} F=(6.67*10^(-11)N\frac{m^2}{\operatorname{kg}^2})*\frac{(6*10^(24)\operatorname{kg})(65\operatorname{kg})}{(6.4*10^6m)^2} \\ =635N \end{gathered}]()
Therefore, the magnitude of the force that you feel due to your gravitational interaction with the Earth is 635 N.