Your rank can be predicted by using the formula, (100-your total percentile)*869010/100. In your case, your approximate rank would be 165285. You haven't mentioned your Category but with this rank, IIITs or NITs are different even with Reservation. Let's say the number of candidates for April exam increased to 12,00,000 then your final rank shall be (100 - your total score) X 12,00,000/100. Having said that, Cut offs change every year. And to predict colleges with these marks, please check our College predictor: https://engineering.careers360.com/jee-main-college-predictor