Is 1965 a deficient number and what is its deficiency?

Is 1965 a deficient number?

Here we will explain and calculate if 1965 is a deficient number and its deficiency if applicable.

1965 is a deficient number if the sum of its proper divisors is less than 1965.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 15 + 131 + 393 + 655 = 1203.

1203 is less than 1965. Therefore, 1965 is a deficient number.

The deficiency of 1965 is 1965 minus the sum of its proper divisors. Thus, the deficiency of 1965 is 1965 - 1203 = 762

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