11290865 has 4 divisors (see below), whose sum is σ = 13549044. Its totient is φ = 9032688.

The previous prime is 11290859. The next prime is 11290871. The reversal of 11290865 is 56809211.

11290865 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, and also an emirpimes, since its reverse is a distinct semiprime: 56809211 = 5557 ⋅10223.

It is an interprime number because it is at equal distance from previous prime (11290859) and next prime (11290871).

It can be written as a sum of positive squares in 2 ways, for example, as 2024929 + 9265936 = 1423^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 11290865 - 2⁶ = 11290801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129082 + ... + 1129091.

It is an arithmetic number, because the mean of its divisors is an integer number (3387261).

Almost surely, 2^11290865 is an apocalyptic number.

It is an amenable number.

11290865 is a deficient number, since it is larger than the sum of its proper divisors (2258179).

11290865 is an equidigital number, since it uses as much as digits as its factorization.

11290865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258178.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 11290865 is about 3360.1882387747. The cubic root of 11290865 is about 224.3412170489.

The spelling of 11290865 in words is "eleven million, two hundred ninety thousand, eight hundred sixty-five".