It is a happy number.
365 is nontrivially palindromic in base 2, base 8 and base 14.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
365 is an undulating number in base 14.
365 is a nontrivial repdigit in base 8.
It is a plaindrome in base 3, base 8, base 9 and base 16.
It is a nialpdrome in base 8 and base 13.
It is a zygodrome in base 8.
It is a congruent number.
365 is the 14-th centered square number.
It is an amenable number.
365 is an equidigital number, since it uses as much as digits as its factorization.
365 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 78.
The square root of 365 is about 19.1049731745. The cubic root of 365 is about 7.1465694988.
Subtracting from 365 its sum of digits (14), we obtain a triangular number (351 = T26).