Is 648 a deficient number and what is its deficiency?

Is 648 a deficient number?

Here we will explain and calculate if 648 is a deficient number and its deficiency if applicable.

648 is a deficient number if the sum of its proper divisors is less than 648.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 4 + 6 + 8 + 9 + 12 + 18 + 24 + 27 + 36 + 54 + 72 + 81 + 108 + 162 + 216 + 324 = 1167.

1167 is not less than 648. Therefore, 648 is not a deficient number.

The deficiency of 648 is 648 minus the sum of its proper divisors. Thus, the deficiency of 648 is 648 - 1167 = No Deficiency

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