11866111 has 8 divisors (see below), whose sum is σ = 12038400. Its totient is φ = 11695320.

The previous prime is 11866109. The next prime is 11866157. The reversal of 11866111 is 11166811.

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 11866111 - 2¹ = 11866109 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 (11866181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31120 + ... + 31498.

It is an arithmetic number, because the mean of its divisors is an integer number (1504800).

Almost surely, 2^11866111 is an apocalyptic number.

11866111 is a deficient number, since it is larger than the sum of its proper divisors (172289).

11866111 is a wasteful number, since it uses less digits than its factorization.

11866111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its digits is 288, while the sum is 25.

The square root of 11866111 is about 3444.7221948947. The cubic root of 11866111 is about 228.0881917469.

The spelling of 11866111 in words is "eleven million, eight hundred sixty-six thousand, one hundred eleven".