13107865 has 4 divisors (see below), whose sum is σ = 15729444. Its totient is φ = 10486288.

The previous prime is 13107847. The next prime is 13107893. The reversal of 13107865 is 56870131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56870131 = 29 ⋅1961039.

It can be written as a sum of positive squares in 2 ways, for example, as 7011904 + 6095961 = 2648^2 + 2469^2 .

It is a cyclic number.

It is not a de Polignac number, because 13107865 - 2¹¹ = 13105817 is a prime.

It is a super-2 number, since 2×13107865² = 343632249716450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310782 + ... + 1310791.

It is an arithmetic number, because the mean of its divisors is an integer number (3932361).

Almost surely, 2^13107865 is an apocalyptic number.

It is an amenable number.

13107865 is a deficient number, since it is larger than the sum of its proper divisors (2621579).

13107865 is an equidigital number, since it uses as much as digits as its factorization.

13107865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621578.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 13107865 is about 3620.4785595277. The cubic root of 13107865 is about 235.7820032820.

Adding to 13107865 its reverse (56870131), we get a palindrome (69977996).

The spelling of 13107865 in words is "thirteen million, one hundred seven thousand, eight hundred sixty-five".