That is a huge sum of money, and a person could certainly donate a large amount to charity, hand out some cash to family members, but still have a chunk of change leftover.
I'd buy a chunk of land where I could build my own lake and that lake would be at least 100 acres in size. I'd build it so that it would be structurally the best largemouth habitat that it could be.
I would buy a chunk of land in South Dakota for my own private pheasant hunting reserve. And build a lodge on it.
Certainly would be doing several exotic fishing trips a year, salmon fishing in Alaska, redfish in the gulf, etc.,