Can you honestly live comfortably off the interest on 1.5 million dollars

Back in high school, I remember my teacher telling us that if his parents passed away, he'd receive a $1.5 million life insurance payout (kinda sketchy to tell a bunch of high schoolers that 🤨) but anyways he said he'd invest the money wisely and live off the interest for the rest of his life, never needing to work again. At the time, I didn't think much of it, but now that I'm older, it really makes me wonder is that actually possible? Could someone invest that money and truly live off the returns? And if so, would it be more realistic in another country outside of America?