1166858 has 16 divisors (see below), whose sum is σ = 2182464. Its totient is φ = 454560.

The previous prime is 1166857. The next prime is 1166861. The reversal of 1166858 is 8586611.

It is not an unprimeable number, because it can be changed into a prime (1166857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3635 + ... + 3942.

It is an arithmetic number, because the mean of its divisors is an integer number (136404).

2^1166858 is an apocalyptic number.

1166858 is a deficient number, since it is larger than the sum of its proper divisors (1015606).

1166858 is a wasteful number, since it uses less digits than its factorization.

1166858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7597.

The product of its digits is 11520, while the sum is 35.

The square root of 1166858 is about 1080.2120162264. The cubic root of 1166858 is about 105.2784145518.

The spelling of 1166858 in words is "one million, one hundred sixty-six thousand, eight hundred fifty-eight".