1111806 has 20 divisors (see below), whose sum is σ = 2491632. Its totient is φ = 370548.

The previous prime is 1111801. The next prime is 1111841. The reversal of 1111806 is 6081111.

It is a super-2 number, since 2×1111806² = 2472225163272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111801) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3270 + ... + 3593.

2^1111806 is an apocalyptic number.

1111806 is an abundant number, since it is smaller than the sum of its proper divisors (1379826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111806 is an equidigital number, since it uses as much as digits as its factorization.

1111806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877 (or 6868 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 1111806 is about 1054.4221166117. The cubic root of 1111806 is about 103.5960041790.

Adding to 1111806 its reverse (6081111), we get a palindrome (7192917).

The spelling of 1111806 in words is "one million, one hundred eleven thousand, eight hundred six".