Il numero 1645, milleseicentoquarantacinque in Italiano, in Inglese si dice one thousand six hundred forty-five.
Il numero ordinale 1645° in inglese si dice one thousand six hundred forty-fifth.
1636: one thousand six hundred thirty-six
1637: one thousand six hundred thirty-seven
1638: one thousand six hundred thirty-eight
1639: one thousand six hundred thirty-nine
1640: one thousand six hundred forty
1641: one thousand six hundred forty-one
1642: one thousand six hundred forty-two
1643: one thousand six hundred forty-three
1644: one thousand six hundred forty-four
1646: one thousand six hundred forty-six
1647: one thousand six hundred forty-seven
1648: one thousand six hundred forty-eight
1649: one thousand six hundred forty-nine
1650: one thousand six hundred fifty
1651: one thousand six hundred fifty-one
1652: one thousand six hundred fifty-two
1653: one thousand six hundred fifty-three
1654: one thousand six hundred fifty-four