(FR) AA - Overpair OOP on a nasty river

No reads on villain.

$0.02 NL - Holdem - 8 players

MP+1: 50 BB (VPIP: 11.22, PFR: 7.80, 3Bet Preflop: 1.85, Hands: 209)
CO: 105 BB (VPIP: 27.27, PFR: 12.73, 3Bet Preflop: 0.00, Hands: 55)
BTN: 101.5 BB (VPIP: 15.79, PFR: 12.17, 3Bet Preflop: 5.49, Hands: 308)
SB: 133 BB (VPIP: 28.59, PFR: 17.93, 3Bet Preflop: 5.99, Hands: 772)
Hero (BB): 100 BB
UTG: 79 BB (VPIP: 14.29, PFR: 2.86, 3Bet Preflop: 0.00, Hands: 36)
UTG+1: 38.5 BB
MP: 342 BB (VPIP: 38.89, PFR: 33.33, 3Bet Preflop: 0.00, Hands: 18)

SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has A♠ A♣

fold, fold, fold, fold, CO raises to 2 BB, fold, SB calls 1.5 BB, Hero raises to 8 BB, CO calls 6 BB, fold

Flop: (18 BB, 2 players) 4♠ 7♣ 6♦
Hero bets 12.5 BB, CO calls 12.5 BB

Turn: (43 BB, 2 players) 7♠
Hero bets 21.5 BB, CO calls 21.5 BB

River: (86 BB, 2 players) 6♠
Thoughts:

Hero bets 6 BB, CO raises to 63 BB and is all-in, fold