Il numero 638, seicentotrentotto in Italiano, in Francese si dice six cent trente-huit.
Il numero ordinale 638° in francese si dice six cent trente-huitième.
629: six cent vingt-neuf
630: six cent trente
631: six cent trente-et-un
632: six cent trente-deux
633: six cent trente-trois
634: six cent trente-quatre
635: six cent trente-cinq
636: six cent trente-six
637: six cent trente-sept
639: six cent trente-neuf
640: six cent quarante
641: six cent quarante-et-un
642: six cent quarante-deux
643: six cent quarante-trois
644: six cent quarante-quatre
645: six cent quarante-cinq
646: six cent quarante-six
647: six cent quarante-sept