No, 7 is not a perfect number. A perfect number is a positive integer that is equal to the sum of its proper divisors, excluding itself. The proper divisors of 7 are 1, and the sum of these divisors is 1. Since 1 is not equal to 7, 7 is not a perfect number.
The smallest perfect number is 6, which is equal to the sum of its proper divisors: 1, 2, and 3 (1 + 2 + 3 = 6). The next perfect number is 28, which is equal to the sum of its proper divisors: 1, 2, 4, 7, and 14 (1 + 2 + 4 + 7 + 14 = 28).