A week contains 604,800 seconds. This calculation can be done by multiplying the number of seconds in a minute (60) by the number of minutes in an hour (60), then by the number of hours in a day (24), and finally by the number of days in a week (7). Therefore, 60 seconds/minute * 60 minutes/hour * 24 hours/day * 7 days/week = 604,800 seconds in a week.