1161806 has 16 divisors (see below), whose sum is σ = 1807920. Its totient is φ = 559680.

The previous prime is 1161791. The next prime is 1161829. The reversal of 1161806 is 6081611.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 10805 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (112995).

2^1161806 is an apocalyptic number.

1161806 is a deficient number, since it is larger than the sum of its proper divisors (646114).

1161806 is a wasteful number, since it uses less digits than its factorization.

1161806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1161806 is about 1077.8710498014. The cubic root of 1161806 is about 105.1262577948.

The spelling of 1161806 in words is "one million, one hundred sixty-one thousand, eight hundred six".