15643

This number is a prime.

The smallest prime number that is the sum of the cubes of five consecutive prime numbers: 7^3+11^3+13^3+17^3+19^3 = 15643. The sum of these five primes is also prime. [Gallardo]

15643 and the 15643th Deficient number (20798) together are strictly pandigital, i.e., containing all digits from 0 to 9 exactly once. This is the smallest number with that property. [Gupta]