150-190g of protein, depending on what you're doing. You're never going to need to be above 190g.
But there's another element to this, possibly.
Stage lean at 64kg? Either you're REALLY tall, or been roiding. If you have been roiding, then your protein requirements may be at the 250g end. So be aware of how these variables may be different for you.
But if totally natty, then yeah, 190g max and probably some mismeasurements on the bf% side of things