13245665 has 8 divisors (see below), whose sum is σ = 16282728. Its totient is φ = 10337920.

The previous prime is 13245647. The next prime is 13245691. The reversal of 13245665 is 56654231.

It can be written as a sum of positive squares in 4 ways, for example, as 61504 + 13184161 = 248^2 + 3631^2 .

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

It is not a de Polignac number, because 13245665 - 2⁸ = 13245409 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32102 + ... + 32511.

It is an arithmetic number, because the mean of its divisors is an integer number (2035341).

Almost surely, 2^13245665 is an apocalyptic number.

It is an amenable number.

13245665 is a deficient number, since it is larger than the sum of its proper divisors (3037063).

13245665 is an equidigital number, since it uses as much as digits as its factorization.

13245665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64659.

The product of its digits is 21600, while the sum is 32.

The square root of 13245665 is about 3639.4594378836. The cubic root of 13245665 is about 236.6053655511.

Adding to 13245665 its reverse (56654231), we get a palindrome (69899896).

The spelling of 13245665 in words is "thirteen million, two hundred forty-five thousand, six hundred sixty-five".