Question 77
Find all six-digit numbers $n$ with the following properties:
* the number formed by the last three digits of $n$ is exactly 4 greater than the number formed by the first three digits of $n$;
* $n$ is the square of an integer.
* the number formed by the last three digits of $n$ is exactly 4 greater than the number formed by the first three digits of $n$;
* $n$ is the square of an integer.