With "reputation to the max" I now have 6,621,210 reputation. Unfortunately, this only shows as 6.6m:
Other reputation levels are shown with three or more significant digits - e.g. 508k as Darin's rep shows above, or xx.xk for values in the [10k, 100k), or the exact value for under 10k.
Why the discrimination against users with over a million rep? Why not show 6.62m?