Il numero 684, seicentottantaquattro in Italiano, in Inglese si dice six hundred eighty-four.
Il numero ordinale 684° in inglese si dice six hundred eighty-fourth.
675: six hundred seventy-five
676: six hundred seventy-six
677: six hundred seventy-seven
678: six hundred seventy-eight
679: six hundred seventy-nine
680: six hundred eighty
681: six hundred eighty-one
682: six hundred eighty-two
683: six hundred eighty-three
685: six hundred eighty-five
686: six hundred eighty-six
687: six hundred eighty-seven
688: six hundred eighty-eight
689: six hundred eighty-nine
690: six hundred ninety
691: six hundred ninety-one
692: six hundred ninety-two
693: six hundred ninety-three