13065539 has 4 divisors (see below), whose sum is σ = 13487040. Its totient is φ = 12644040.

The previous prime is 13065527. The next prime is 13065557. The reversal of 13065539 is 93556031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13065539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13065739) 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 3 ways as a sum of consecutive naturals, for example, 210704 + ... + 210765.

It is an arithmetic number, because the mean of its divisors is an integer number (3371760).

Almost surely, 2^13065539 is an apocalyptic number.

13065539 is a deficient number, since it is larger than the sum of its proper divisors (421501).

13065539 is an equidigital number, since it uses as much as digits as its factorization.

13065539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421500.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 13065539 is about 3614.6284733012. The cubic root of 13065539 is about 235.5279453797.

The spelling of 13065539 in words is "thirteen million, sixty-five thousand, five hundred thirty-nine".