13407865 has 4 divisors (see below), whose sum is σ = 16089444. Its totient is φ = 10726288.

The previous prime is 13407859. The next prime is 13407869. The reversal of 13407865 is 56870431.

13407865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9884736 + 3523129 = 3144^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 13407865 - 2⁵ = 13407833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13407865.

It is not an unprimeable number, because it can be changed into a prime (13407869) 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, 1340782 + ... + 1340791.

It is an arithmetic number, because the mean of its divisors is an integer number (4022361).

Almost surely, 2^13407865 is an apocalyptic number.

It is an amenable number.

13407865 is a deficient number, since it is larger than the sum of its proper divisors (2681579).

13407865 is an equidigital number, since it uses as much as digits as its factorization.

13407865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681578.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 13407865 is about 3661.6751630913. The cubic root of 13407865 is about 237.5672348887.

The spelling of 13407865 in words is "thirteen million, four hundred seven thousand, eight hundred sixty-five".