You can tour in some fashion on any bike. How suitable or unsuitable it is will depend on a lot of factors. Where do you plan to go and what do you plan to carry?

It would be fine for credit card touring with a light load. It would be OK for carrying a very light camping load on flattish terrain. It would be OK for carrying a bit more gear in a trailer again on flattish terrain. If there will be lots of climbing, you will probably be happier with lower gearing.