I would pay someone to diversify and invest it for me. Assuming a 6% return rate (on average), the principal would generate approximately $150,000/year in interest. Obviously more if you reinvest some of it.

Eventually I would probably dip into the principal to afford a nice home with some land somewhere. I haven't settled on the details yet.

Honestly, the most valuable part of this would be that my time is freed up to work on things I'm passionate about.