Here is a PL/SQL program that can determine whether a number is even or odd:

DECLARE
  num NUMBER;
BEGIN
  num := #

  IF MOD(num, 2) = 0 THEN
    DBMS_OUTPUT.PUT_LINE('The number ' || num || ' is even.');
  ELSE
    DBMS_OUTPUT.PUT_LINE('The number ' || num || ' is odd.');
  END IF;
END;

To use this program, you would need to provide the number as input. You can do this by replacing &num with the actual value of the number in the program. For example, if the number is 7, you can replace &num with 7.

This program uses the MOD function, which calculates the remainder when a number is divided by another number. In this case, the MOD function is used to calculate the remainder when the number is divided by 2. If the remainder is 0, the number is even, otherwise it is odd.

You can run this program in a PL/SQL editor, such as Oracle SQL Developer or SQL*Plus. When you execute the program, it will print whether the number is even or odd to the output.

I hope this helps! Let me know if you have any other questions.