Is 720 a deficient number and what is its deficiency?

Is 720 a deficient number?

Here we will explain and calculate if 720 is a deficient number and its deficiency if applicable.

720 is a deficient number if the sum of its proper divisors is less than 720.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 4 + 5 + 6 + 8 + 9 + 10 + 12 + 15 + 16 + 18 + 20 + 24 + 30 + 36 + 40 + 45 + 48 + 60 + 72 + 80 + 90 + 120 + 144 + 180 + 240 + 360 = 1698.

1698 is not less than 720. Therefore, 720 is not a deficient number.

The deficiency of 720 is 720 minus the sum of its proper divisors. Thus, the deficiency of 720 is 720 - 1698 = No Deficiency

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