Possible, if you bought ethereum 1 year ago with your 10k usd. Now you would have 600k USD. Very close to become a millioneire 
If you bought litecoin 1 year ago with 10k usd, you would already have 1 millione usd in your pocket
there is always a possibility in the cryptocurrency market, the one thing you have to look at is the time, how long do you need to reach that possibilityIf you bought litecoin 1 year ago with 10k usd, you would already have 1 millione usd in your pocket
it could take a year or maybe a few years