How to convert number to date?

So I have a column that I import to my dataset that comes in as "201701" or "201702" etc. I am trying to turn this column into the end of month date for the respective month. So 1/31/17 for the first and 2/28/17 for the second. I know I can split the column by number of characters to get a column with "2017" and another column  with "01" or "02". However, I'm stumped where to go from here to make these columns the date I want. I don't think I can use any date functions since these columns are recognized as numbers. And if I convert the columns to date, it just makes them a weird date.

Any ideas or is it possible to convert this column into a column that I'm looking for?

Thanks