REUTERS The U.S. dollar has strengthened by 37 kopiykas to RUR 66.97, while the euro rose by 39 kopiykas to RUR 74.5. In early trading, the dollar struck another psychologically important mark – it rose by 45 kopiykas to RUR 67.05, while the euro went up by 58 kopiykas to RUR 74.69. After that, the quotations fell. The Russian stock market has changed multidirectionally. The MICEX index grew by 0.58% to 1683.52 points. The RTS index fell by 0.53% to 789.99 points.