Il numero 1680, milleseicentottanta in Italiano, in Inglese si dice one thousand six hundred eighty.
Il numero ordinale 1680° in inglese si dice one thousand six hundred eightieth.
1671: one thousand six hundred seventy-one
1672: one thousand six hundred seventy-two
1673: one thousand six hundred seventy-three
1674: one thousand six hundred seventy-four
1675: one thousand six hundred seventy-five
1676: one thousand six hundred seventy-six
1677: one thousand six hundred seventy-seven
1678: one thousand six hundred seventy-eight
1679: one thousand six hundred seventy-nine
1681: one thousand six hundred eighty-one
1682: one thousand six hundred eighty-two
1683: one thousand six hundred eighty-three
1684: one thousand six hundred eighty-four
1685: one thousand six hundred eighty-five
1686: one thousand six hundred eighty-six
1687: one thousand six hundred eighty-seven
1688: one thousand six hundred eighty-eight
1689: one thousand six hundred eighty-nine