13065729 has 4 divisors (see below), whose sum is σ = 17420976. Its totient is φ = 8710484.

The previous prime is 13065713. The next prime is 13065733. The reversal of 13065729 is 92756031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13065729 - 2⁴ = 13065713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13065729.

It is not an unprimeable number, because it can be changed into a prime (13065709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2177619 + ... + 2177624.

It is an arithmetic number, because the mean of its divisors is an integer number (4355244).

Almost surely, 2^13065729 is an apocalyptic number.

It is an amenable number.

13065729 is a deficient number, since it is larger than the sum of its proper divisors (4355247).

13065729 is an equidigital number, since it uses as much as digits as its factorization.

13065729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355246.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 13065729 is about 3614.6547552982. The cubic root of 13065729 is about 235.5290870623.

The spelling of 13065729 in words is "thirteen million, sixty-five thousand, seven hundred twenty-nine".