How many years passed between the completion of the Great Pyramid of Giza and the birth of Cleopatra?

Answer

2,490 years

Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid. To her, the pyramids were already impossibly ancient monuments — older than ancient Rome is to us.

Source: Encyclopaedia Britannica (pyramid completed c. 2560 BC; Cleopatra born 69 BC)