Ok. Mostly, that information (about the scene) means nothing… mostly. If you just put 1,658,661 verts randomly in a scene and rendered it would take no time at all. If you have hundreds of objects with AO, refraction, raytraced reflections, caustics, and HDRI… well I would get a nice long book to read while you wait. War and Peace?
So if you could give an overview of what the scene contains, that would help. Or you could just set it to render before you go to bed, leave it on all night and possibly when you go to school/work. I suggest turing off your screne saver so you can check it. Turn the monitor off, instead.