714589

Appears in sequences

• Numbers n such that sigma(sigma(n) - phi(n)) = phi(sigma(n) + phi(n)).at n=25A074876
• a(n) is the smallest number greater than a(n-1) such that in a(1) through a(n) no digit occurs more than once more than any other digit, starting with a(1) = 1.at n=56A248651