Is 1564 a deficient number and what is its deficiency?

Is 1564 a deficient number?

Here we will explain and calculate if 1564 is a deficient number and its deficiency if applicable.

1564 is a deficient number if the sum of its proper divisors is less than 1564.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 17 + 23 + 34 + 46 + 68 + 92 + 391 + 782 = 1460.

1460 is less than 1564. Therefore, 1564 is a deficient number.

The deficiency of 1564 is 1564 minus the sum of its proper divisors. Thus, the deficiency of 1564 is 1564 - 1460 = 104

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