66

This number is a composite.

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The smallest even number whose sum of distinct prime factors is a fourth power, this is curiously the fourth such number: 66 = 2 * 3 * 11 and 2 + 3 + 11 = 16 = 2^4. [Post]

Submitted: 2009-09-21 02:28:13; Last Modified: 2009-09-21 14:00:08.