65. There is a four-digit number, its product with 6 is a perfect cube, and its quotient with 6 is a perfect square; then this four-digit number is .
Problem 439
Official solution
Answer: 7776
65. There is a four-digit number, its product with 6 is a perfect cube, and its quotient with 6 is a perfect square; then this four-digit number is .
Answer: 7776