13065609 has 16 divisors (see below), whose sum is σ = 17922240. Its totient is φ = 8463360.

The previous prime is 13065607. The next prime is 13065629. The reversal of 13065609 is 90656031.

It is a happy number.

It is not a de Polignac number, because 13065609 - 2¹ = 13065607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13065607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16789 + ... + 17549.

It is an arithmetic number, because the mean of its divisors is an integer number (1120140).

Almost surely, 2^13065609 is an apocalyptic number.

It is an amenable number.

13065609 is a deficient number, since it is larger than the sum of its proper divisors (4856631).

13065609 is an equidigital number, since it uses as much as digits as its factorization.

13065609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 13065609 is about 3614.6381561645. The cubic root of 13065609 is about 235.5283660009.

The spelling of 13065609 in words is "thirteen million, sixty-five thousand, six hundred nine".