It is a happy number.
1366 is nontrivially palindromic in base 3.
1366 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
1366 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.
1366 is an undulating number in base 3.
1366 is strictly pandigital in base 5.
It is a plaindrome in base 4, base 9, base 10 and base 16.
It is a nialpdrome in base 13 and base 15.
It is a congruent number.
1366 is an equidigital number, since it uses as much as digits as its factorization.
It is an anagram of its base 7 representation: 1366 = (3661)7.
1366 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 685.
The square root of 1366 is about 36.9594372252. The cubic root of 1366 is about 11.0955857241.
Adding to 1366 its reverse (6631), we get a palindrome (7997).
The spelling of 1366 in words is "one thousand, three hundred sixty-six".