This is the 12354th most frequent Swedish word.
sjutton
"Sjutton" means "seventeen" in English.
Here, 'sjutton' is used as a numeric value meaning 'Seventeen'.
Sjutton människor deltog i mötet.
Seventeen people attended the meeting.
In this sentence, 'sjutton' is used as an exclamation expressing surprise or curiosity, similar to 'what on earth' in English.
Vad i hela sjutton gör du här?
What on earth are you doing here?
Here, 'sjutton' functions as an age descriptor, emphasizing someone's age of seventeen.