1155806 has 8 divisors (see below), whose sum is σ = 1780680. Its totient is φ = 562248.

The previous prime is 1155733. The next prime is 1155821. The reversal of 1155806 is 6085511.

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

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 3 ways as a sum of consecutive naturals, for example, 7736 + ... + 7883.

It is an arithmetic number, because the mean of its divisors is an integer number (222585).

2^1155806 is an apocalyptic number.

1155806 is a deficient number, since it is larger than the sum of its proper divisors (624874).

1155806 is a wasteful number, since it uses less digits than its factorization.

1155806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15658.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1155806 is about 1075.0841827504. The cubic root of 1155806 is about 104.9449749486.

It can be divided in two parts, 1155 and 806, that multiplied together give a triangular number (930930 = T₁₃₆₄).

The spelling of 1155806 in words is "one million, one hundred fifty-five thousand, eight hundred six".