Can I retire at 60 with $4000000?

Can I realistically retire at the age of 60 with a nest egg of $4 million? That's a significant amount of savings, but is it enough to sustain a comfortable lifestyle for the decades to come? What factors should I consider when planning for retirement, such as inflation, market volatility, and potential healthcare costs? Will my investments in cryptocurrency and other financial instruments provide a stable source of income? Or should I consider diversifying my portfolio further to minimize risk? Ultimately, is $4 million a sufficient safety net, or should I aim for an even larger retirement fund?