Convert your final output to time format or use below code
select convert(time,cast((465 / 60) as varchar(2)) + ':' + cast((465 % 60) as varchar(2)),108)
select replace(cast((465 % 1440) as varchar(2)),'*','0') + ':' +cast((465 / 60) as varchar(2)) + ':' + cast((465 % 60) as varchar(2))