11505065 has 16 divisors (see below), whose sum is σ = 16220736. Its totient is φ = 7723200.

The previous prime is 11505049. The next prime is 11505071. The reversal of 11505065 is 56050511.

It is not a de Polignac number, because 11505065 - 2⁴ = 11505049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11505065.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7331 + ... + 8760.

It is an arithmetic number, because the mean of its divisors is an integer number (1013796).

Almost surely, 2^11505065 is an apocalyptic number.

It is an amenable number.

11505065 is a deficient number, since it is larger than the sum of its proper divisors (4715671).

11505065 is a wasteful number, since it uses less digits than its factorization.

11505065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16120.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 11505065 is about 3391.9117028602. The cubic root of 11505065 is about 225.7510049104.

Adding to 11505065 its reverse (56050511), we get a palindrome (67555576).

It can be divided in two parts, 1150506 and 5, that added together give a palindrome (1150511).

The spelling of 11505065 in words is "eleven million, five hundred five thousand, sixty-five".