11085981 has 8 divisors (see below), whose sum is σ = 14806560. Its totient is φ = 7378032.

The previous prime is 11085979. The next prime is 11085983. The reversal of 11085981 is 18958011.

It is an interprime number because it is at equal distance from previous prime (11085979) and next prime (11085983).

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

It is not a de Polignac number, because 11085981 - 2¹ = 11085979 is a prime.

It is a super-2 number, since 2×11085981² = 245797949464722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11085983) 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 7 ways as a sum of consecutive naturals, for example, 871 + ... + 4788.

It is an arithmetic number, because the mean of its divisors is an integer number (1850820).

Almost surely, 2^11085981 is an apocalyptic number.

It is an amenable number.

11085981 is a deficient number, since it is larger than the sum of its proper divisors (3720579).

11085981 is an equidigital number, since it uses as much as digits as its factorization.

11085981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6315.

The product of its (nonzero) digits is 2880, while the sum is 33.

The square root of 11085981 is about 3329.5616828646. The cubic root of 11085981 is about 222.9759604617.

The spelling of 11085981 in words is "eleven million, eighty-five thousand, nine hundred eighty-one".