1166559 has 8 divisors (see below), whose sum is σ = 1562880. Its totient is φ = 773976.

The previous prime is 1166549. The next prime is 1166563. The reversal of 1166559 is 9556611.

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

It is not a de Polignac number, because 1166559 - 2⁵ = 1166527 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166549) 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, 97 + ... + 1530.

It is an arithmetic number, because the mean of its divisors is an integer number (195360).

2^1166559 is an apocalyptic number.

1166559 is a deficient number, since it is larger than the sum of its proper divisors (396321).

1166559 is a wasteful number, since it uses less digits than its factorization.

1166559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869.

The product of its digits is 8100, while the sum is 33.

The square root of 1166559 is about 1080.0736086027. The cubic root of 1166559 is about 105.2694214738.

The spelling of 1166559 in words is "one million, one hundred sixty-six thousand, five hundred fifty-nine".