Code Cracking

You've stumbled upon an old electronic safe during your grand adventures. To access its contents, you need to input a three-digit passcode. As a master code-breaker, you managed to find some clues about this passcode:

1. The code isn't an odd number.
2. The digit '6' is not part of the code.
3. One of the digits appears more than once in the code.
4. The code does not start with '0'.

Can you determine how many possible three-digit codes satisfy all these requirements?

Answer format: enter an integer.