The tally is being boosted by a huge volume of ticket sales.
The cash payout amount after taxes would be $462-million.
Mega Millions is played in Arkansas and 40 other states, plus Washington, DC and the U.S. Virgin
You can watch the next live drawing for Mega Millions exclusively on KARK 4 tonight at 10 o'clock.
Another fun fact:
Athena Hernandez with the DC lottery confirms to CNN if there is no winner tonight the jackpot will increase to an estimated $975 Million for the drawing on Tuesday April 3rd.
Mega Millions $640M Jackpot: Arkansas Facts
Tonight's the Night: $540M Mega Millions Drawing, See it Live on KARK 4
The Mega Millions Mind