Yeah potatoes will fill your stomach and better than starving but they aren't really healthy food. Eat them in moderation, and prefer sweet potatoes/yams.
“ true that potatoes are high in starch or carbohydrates, the nutrients that cause spikes in blood sugar. But pairing them with foods high in protein, fiber and unsaturated fats can slow digestion and lead to a steadier release of glucose into the bloodstream.”
Which suggests you should add toppings or else potatoes are not very healthy if eaten on their own. (I think they’re fairly high up on the glycemic index).