11115865 has 8 divisors (see below), whose sum is σ = 13428288. Its totient is φ = 8833200.

The previous prime is 11115859. The next prime is 11115869. The reversal of 11115865 is 56851111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11115865 - 2³ = 11115857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11115869) 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 7 ways as a sum of consecutive naturals, for example, 6607 + ... + 8116.

It is an arithmetic number, because the mean of its divisors is an integer number (1678536).

Almost surely, 2^11115865 is an apocalyptic number.

It is an amenable number.

11115865 is a deficient number, since it is larger than the sum of its proper divisors (2312423).

11115865 is a wasteful number, since it uses less digits than its factorization.

11115865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14879.

The product of its digits is 1200, while the sum is 28.

The square root of 11115865 is about 3334.0463404098. The cubic root of 11115865 is about 223.1761362551.

Adding to 11115865 its reverse (56851111), we get a palindrome (67966976).

The spelling of 11115865 in words is "eleven million, one hundred fifteen thousand, eight hundred sixty-five".