17. The amount in rubles, transferred by one of the enterprises to the World Fund, is expressed as the largest even five-digit number such that the first three digits form a number that is a perfect square, and the last three digits form a number that is a perfect cube. What amount has the enterprise transferred to the World Fund?
17. The last three digits of the desired number represent a number that is the cube of an even number. There are two possible cases: $8^{3}=512$ and $6^{3}=216$. However, since there is no square of a natural number that ends in 2, the second case is ruled out. The largest three-digit number that is a perfect square and ends in 5 is 625. Therefore, the desired number is 62512.