May 6 (Reuters) - The Russian rouble was stable against

the U.S. dollar on Monday.

By 0715 GMT, the rouble was flat at 91.60 to

the dollar.

Against the euro, the rouble rose 0.12%

to 98.64 and gained 0.26% to 12.66 against the yuan

.

Brent crude oil, a global benchmark for Russia's

main export, rose 0.7% to $83.51 a barrel.

Russian stock indexes fell. The dollar-denominated RTS index

fell 0.2% to 1,182.35. The rouble-based MOEX Russian

index lost 0.11% to 3,438.00.

($1 = 91.5975 roubles)