62001

Appears in sequences

• a(n) = (9*n + 6)^2.at n=27A017234
• a(n) = (10*n + 9)^2.at n=24A017378
• a(n) = (11*n + 7)^2.at n=22A017474
• a(n) = (12*n + 9)^2.at n=20A017630
• Composite numbers whose prime factors contain no digits other than 3 and 8.at n=27A036317
• Odd refactorable numbers.at n=28A036896
• List of pairs of consecutive refactorable numbers.at n=9A036898
• Square refactorable numbers.at n=36A036907
• Squares with initial digit '6'.at n=13A045789
• n is odd and divisible by number of divisors of n and sum of digits of n.at n=9A057530
• Numbers k such that tau(k) - tau(k+1) = 1.at n=36A068208
• Numbers k such that phi(k)^2+sigma(k)^2 is prime.at n=33A068367
• Squares which repeat with at least two full periods when written in base 3.at n=5A071129
• Smaller of the two successive squares which differ in the use of only one digit.at n=27A078187
• Smallest square k^2 == 1 (mod 10^n) where k > 1.at n=2A085877
• a(1) = 1, then least square such that every partial concatenation is a prime.at n=14A090257
• Numbers k such that sigma(k) - phi(k) is a brilliant number (A078972).at n=20A115917
• Squares for which the sum of the digits, the product of the digits, the digital root and the multiplicative digital root are all squares.at n=20A117680
• RF(3): refactorable numbers with smallest prime factor 3.at n=26A120319
• A positive integer is included if it is a square that contains the same number of 0's as 1's when represented in binary.at n=29A164343