Jose Rodrigues, of Dorchester, won the prize playing the "777" scratch-off game.
He elected to take the lump sum payment of $650,000 (before) taxes rather than the annuity.
Rodrigues said he'll use the money to pay off his mortgage.
He bought the ticket at O'Brien's Wines & Liquors at 1911 Dorchester Ave. in Dorchester. The store will get a $10,000 bonus for the sale.
Click here to follow Daily Voice Quincy and receive free news updates.