11380565 has 32 divisors (see below), whose sum is σ = 17086464. Its totient is φ = 7096320.

The previous prime is 11380547. The next prime is 11380619. The reversal of 11380565 is 56508311.

11380565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11380565 - 2⁸ = 11380309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18137 + ... + 18753.

It is an arithmetic number, because the mean of its divisors is an integer number (533952).

Almost surely, 2^11380565 is an apocalyptic number.

It is an amenable number.

11380565 is a deficient number, since it is larger than the sum of its proper divisors (5705899).

11380565 is a wasteful number, since it uses less digits than its factorization.

11380565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 11380565 is about 3373.5093004170. The cubic root of 11380565 is about 224.9337418070.

Adding to 11380565 its reverse (56508311), we get a palindrome (67888876).

The spelling of 11380565 in words is "eleven million, three hundred eighty thousand, five hundred sixty-five".