74474476

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 4, 5, 6 and 7.at n=31A136948
• Numbers k such that k and k^2 use only the digits 1, 4, 5, 6 and 7.at n=31A137046
• Numbers k such that k and k^2 use only the digits 4, 5, 6 and 7.at n=3A137139
• Numbers k such that k and k^2 use only the digits 4, 5, 6, 7 and 9.at n=18A137141
• Numbers n such that the decimal expansions of both n and n^2 have 4 as the digit with the smallest value and 7 as the digit with the largest value.at n=2A257534