Sixty in Dutch is zestig, in French it is soixante, in German it it sechzig, in Italian it is sessanta, in Portuguese it is sessenta, and in Spanish it is sesenta.
Source: http://babelfish.yahoo.com/translate_txt
And we say 'hatvan' in Hungary. It's also a name of a city here.
hannah
wo
Melinda
Erica
russian
resreach
french
architecture
M(umlaut)arz
Occours,.Ricardo I spanish
The question has provided the correct answer, you spell 60 as sixty.
Sixty-three.