648
648 is an even composite number composed of two prime numbers multiplied together.
648 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of twenty divisors.
Prime factorization of 648:
2^{3} × 3^{4}
(2 × 2 × 2 × 3 × 3 × 3 × 3)See below for interesting mathematical facts about the number 648 from the Numbermatics database.
Names of 648
 Cardinal: 648 can be written as Six hundred fortyeight.
Scientific notation
 Scientific notation: 6.48 × 10^{2}
Factors of 648
Divisors of 648
Bases of 648
 Binary: 1010001000_{2}
 Hexadecimal: 0x288
 Base36: I0
Squares and roots of 648
Scales and comparisons
How big is 648? 648 seconds is equal to 10 minutes, 48 seconds.

To count from 1 to 648 would take you about five minutes.
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomlychosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
 A cube with a volume of 648 cubic inches would be around 0.7 feet tall.
Recreational maths with 648
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The information we have on file for 648 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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