# Divisors of the Positive Integer 643

1, 643## Sum of all the Divisors of 643, including itself

644## Sum of the Proper Divisors of 643

1## Properties of the number 643

The integer 643 is an**odd**number.

The integer 643 is a

**Prime**number.

1 is

*less than*643, so 643 is a

**deficient**number.

## The number 643 as a Roman Numeral

**DCXLIII**

## The number 643 in various Numeral Systems

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

2: | 1010000011 |

3: | 212211 |

4: | 22003 |

5: | 10033 |

6: | 2551 |

7: | 1606 |

8: | 1203 |

9: | 784 |

10: | 643 |

11: | 535 |

12: | 457 |

13: | 3A6 |

14: | 33D |

15: | 2CD |

16: | 283 |

17: | 23E |

18: | 1HD |

19: | 1EG |

20: | 1C3 |

21: | 19D |

22: | 175 |

23: | 14M |

24: | 12J |

25: | 10I |

26: | OJ |

27: | NM |

28: | MR |

29: | M5 |

30: | LD |

31: | KN |

32: | K3 |

33: | JG |

34: | IV |

35: | ID |

36: | HV |