Is 643 an abundant number and what is its abundance?

Is 643 an abundant number?

Here we will explain and calculate if 643 is an abundant number and its abundance if applicable.

643 is an abundant number if the sum of its proper divisors is greater than 643.

The sum of its proper divisors is calculated as follows: 1 = 1.

1 is not greater than 643. Therefore, 643 is not an abundant number.

The abundance of 643 is the sum of its proper divisors minus 643. Thus, the abundance of 643 is 1 - 643 = no abundance

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