# Divisors of the Positive Integer 645

1, 3, 5, 15, 43, 129, 215, 645## Sum of all the Divisors of 645, including itself

1056## Sum of the Proper Divisors of 645

411## Properties of the number 645

The integer 645 is an**odd**number.

The integer 645 is a

**Composite**number.

411 is

*less than*645, so 645 is a

**deficient**number.

## The number 645 as a Roman Numeral

**DCXLV**

## The number 645 in various Numeral Systems

Base |
Representation |
---|---|

2: | 1010000101 |

3: | 212220 |

4: | 22011 |

5: | 10040 |

6: | 2553 |

7: | 1611 |

8: | 1205 |

9: | 786 |

10: | 645 |

11: | 537 |

12: | 459 |

13: | 3A8 |

14: | 341 |

15: | 2D0 |

16: | 285 |

17: | 23G |

18: | 1HF |

19: | 1EI |

20: | 1C5 |

21: | 19F |

22: | 177 |

23: | 151 |

24: | 12L |

25: | 10K |

26: | OL |

27: | NO |

28: | N1 |

29: | M7 |

30: | LF |

31: | KP |

32: | K5 |

33: | JI |

34: | IX |

35: | IF |

36: | HX |