He actually won $600k because he would have had to accept $50k/year over 20 years to get the $1 million prize money. If invested wisely $600k now (~$430k after

He actually won $600k because he would have had to accept $50k/year over 20 years to get the $1 million prize money. If invested wisely $600k now (~$430k after tax) is probably the wiser move.