Not right now, price is so high.
Definitely today is not a the right time to buy bitcoin if you are thinking to invest 1 bitcoin and you don't have something to hold to.
But if you already have bitcoin that you holds it is a very good thing to invest in a long term investment with that 1 btc.
It is not like that you think bitcoins price is worth 650$ man ? not at all !
Note it in coming days or may be months you will see the price jumping from 600$ to 1500$ or maybe around that. Please buy now before it gets too late for buying.