wanting to upgrade cpu for my dell inspiron 3650

I want to upgrade my CPU for my Dell Inspiron 3650, but I'm not sure what I should go with or if it will even be compatible. I want a CPU that doesn't bottleneck the GTX 1660 super I will put in there and will fit in the motherboard. I also have a 400W psu i will put it there but would like to know if any recommendations would require more wattage. Thanks in advance.

current specs of the machine

i5-6400