1166539 has 8 divisors (see below), whose sum is σ = 1282032. Its totient is φ = 1052640.

The previous prime is 1166533. The next prime is 1166549. The reversal of 1166539 is 9356611.

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 1166539 - 2³ = 1166531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166539.

It is not an unprimeable number, because it can be changed into a prime (1166531) by changing a digit.

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, 1597 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (160254).

2^1166539 is an apocalyptic number.

1166539 is a deficient number, since it is larger than the sum of its proper divisors (115493).

1166539 is a wasteful number, since it uses less digits than its factorization.

1166539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its digits is 4860, while the sum is 31.

The square root of 1166539 is about 1080.0643499348. The cubic root of 1166539 is about 105.2688198753.

The spelling of 1166539 in words is "one million, one hundred sixty-six thousand, five hundred thirty-nine".