11065881 has 4 divisors (see below), whose sum is σ = 14754512. Its totient is φ = 7377252.

The previous prime is 11065877. The next prime is 11065889. The reversal of 11065881 is 18856011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11065881 - 2² = 11065877 is a prime.

It is a super-2 number, since 2×11065881² = 244907444612322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11065889) by changing a digit.

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, 1844311 + ... + 1844316.

It is an arithmetic number, because the mean of its divisors is an integer number (3688628).

Almost surely, 2^11065881 is an apocalyptic number.

It is an amenable number.

11065881 is a deficient number, since it is larger than the sum of its proper divisors (3688631).

11065881 is an equidigital number, since it uses as much as digits as its factorization.

11065881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688630.

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 11065881 is about 3326.5418981278. The cubic root of 11065881 is about 222.8411196449.

The spelling of 11065881 in words is "eleven million, sixty-five thousand, eight hundred eighty-one".