Is 671 a deficient number and what is its deficiency?

Is 671 a deficient number?

Here we will explain and calculate if 671 is a deficient number and its deficiency if applicable.

671 is a deficient number if the sum of its proper divisors is less than 671.

The sum of its proper divisors is calculated as follows: 1 + 11 + 61 = 73.

73 is less than 671. Therefore, 671 is a deficient number.

The deficiency of 671 is 671 minus the sum of its proper divisors. Thus, the deficiency of 671 is 671 - 73 = 598

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