11111087 has 8 divisors (see below), whose sum is σ = 11991840. Its totient is φ = 10234080.

The previous prime is 11111083. The next prime is 11111099. The reversal of 11111087 is 78011111.

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

It is a cyclic number.

It is not a de Polignac number, because 11111087 - 2² = 11111083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10262 + ... + 11292.

It is an arithmetic number, because the mean of its divisors is an integer number (1498980).

Almost surely, 2^11111087 is an apocalyptic number.

11111087 is a deficient number, since it is larger than the sum of its proper divisors (880753).

11111087 is a wasteful number, since it uses less digits than its factorization.

11111087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873.

The product of its (nonzero) digits is 56, while the sum is 20.

The square root of 11111087 is about 3333.3297166647. The cubic root of 11111087 is about 223.1441552862.

Adding to 11111087 its reverse (78011111), we get a palindrome (89122198).

The spelling of 11111087 in words is "eleven million, one hundred eleven thousand, eighty-seven".