Is 975 a deficient number and what is its deficiency?

Is 975 a deficient number?

Here we will explain and calculate if 975 is a deficient number and its deficiency if applicable.

975 is a deficient number if the sum of its proper divisors is less than 975.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 13 + 15 + 25 + 39 + 65 + 75 + 195 + 325 = 761.

761 is less than 975. Therefore, 975 is a deficient number.

The deficiency of 975 is 975 minus the sum of its proper divisors. Thus, the deficiency of 975 is 975 - 761 = 214

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