sterretje:
Use EEPROM.put() and EEPROM.get(); it will write and read any variable type as needed (with exception if String (capital S)).
The OP is asking for the division of a number into two bytes before the number is stored into EEPOM. The EEPROM.put() command, of course, divides the number into two bytes before writing it into EEPROM; but, the process happens beyond the knowledge of the user.