1223265 has 8 divisors (see below), whose sum is σ = 1957248. Its totient is φ = 652400.

The previous prime is 1223263. The next prime is 1223279. The reversal of 1223265 is 5623221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223265 - 2¹ = 1223263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40761 + ... + 40790.

It is an arithmetic number, because the mean of its divisors is an integer number (244656).

2^1223265 is an apocalyptic number.

1223265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223265 is a deficient number, since it is larger than the sum of its proper divisors (733983).

1223265 is an equidigital number, since it uses as much as digits as its factorization.

1223265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81559.

The product of its digits is 720, while the sum is 21.

The square root of 1223265 is about 1106.0131102297. The cubic root of 1223265 is about 106.9482091339.

Adding to 1223265 its reverse (5623221), we get a palindrome (6846486).

The spelling of 1223265 in words is "one million, two hundred twenty-three thousand, two hundred sixty-five".