Pyramid of Cheops was built about 2606-2583 B.C. I am not a biblical historian, but I thought Joseph lives much later.
http://lib.haifa.ac.il/www/art/cheops.html
It's true, Joseph lived hundreds of years later. A canal built to irrigate areas west of the Nile (and ultimately, to feed Lake Fayyum) still bears Joseph's name; he was in Egypt during the Middle Kingdom, and the MK pharaohs built a lot of stuff near the end of the canal.