160986

Appears in sequences

• Numbers k such that sigma(phi(k)) = phi(sigma(k)).at n=30A033632
• Squarefree n such that sigma(phi(n)) = phi(sigma(n)).at n=3A058652
• Numbers k such that phi(2*sigma(k)) = 2*sigma(phi(k)).at n=34A067709
• Numbers k such that sigma(phi(k)) == phi(sigma(k)) (mod k), that is, A033632(k)/k is an integer.at n=32A092584