LISBON, Oct 30 (Reuters) - Portugal's largest listed bank, Millennium bcp, posted on Monday a nine-month net profit more than seven times higher than a year ago, thanks to rising European interest rates and cost controls, despite high provisions at its Polish unit.

It reported a consolidated net profit of 650.7 million euros ($690 million) between January and September, up from 89.8 million euros a year earlier.

Consolidated net interest income (NII), or earnings on loans minus deposit costs, rose 37% to 2.1 billion euros in the nine months, benefiting from interest rate hikes by the European Central Bank and the Polish central bank to curb inflation.

Its half-owned Polish subsidiary, Bank Millennium, on Friday reported net income of 100.7 million euros in the nine months, compared to a loss of 276 million euros a year ago, despite 482.5 million euros in provisions due to legal risks over its portfolio of Swiss franc mortgage loans. ($1 = 4.2250 zlotys) ($1 = 0.9431 euros) (Reporting by Sergio Goncalves; editing by Andrei Khalip)