13623265 has 4 divisors (see below), whose sum is σ = 16347924. Its totient is φ = 10898608.

The previous prime is 13623257. The next prime is 13623283. The reversal of 13623265 is 56232631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2178576 + 11444689 = 1476^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 13623265 - 2³ = 13623257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362322 + ... + 1362331.

It is an arithmetic number, because the mean of its divisors is an integer number (4086981).

Almost surely, 2^13623265 is an apocalyptic number.

It is an amenable number.

13623265 is a deficient number, since it is larger than the sum of its proper divisors (2724659).

13623265 is an equidigital number, since it uses as much as digits as its factorization.

13623265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724658.

The product of its digits is 6480, while the sum is 28.

The square root of 13623265 is about 3690.9707395210. The cubic root of 13623265 is about 238.8326705841.

Adding to 13623265 its reverse (56232631), we get a palindrome (69855896).

The spelling of 13623265 in words is "thirteen million, six hundred twenty-three thousand, two hundred sixty-five".