SQL doesn't have a data type for timespans - so there is nothing you can return as a single item other than VARCHAR.
DECLARE @TIME INT
SET @TIME = 635
SELECT CONVERT(VARCHAR(10), @TIME / 100) + ' hours, ' + CONVERT(VARCHAR(10), @TIME % 100) + ' minutes'
Or you could return it as two columns.
DECLARE @TIME INT
SET @TIME = 635
SELECT @TIME / 100 AS [Hours], @TIME % 100 AS [Minutes]