No problem. The nice thing about the shortcode arguments is that they can go in any order between the brackets. So in your example, you would update it to look like this:
[gallery ids="659,660,500,484,464" caption="true"]
You will note that we placed double-quotes around the boolean true. They are not required in most cases but it is safer to enclose your values.
You may find the Gallery Shortcode manual in the WordPress Codex to be useful in discovering some of the other options that are available.
We hope that this addresses your question sufficiently. Please let us know if not and we will do our best to clarify.