742577

Appears in sequences

• a(n) = n + n*(n-1)*(n-2)*(n-3)*(n-4).at n=17A001095
• Numbers k for which gcd(k, A003961(k)) = gcd(sigma(k), A003961(k)) > 1, and that satisfy Euler's condition for odd perfect numbers (A228058).at n=17A387166