1166105 has 4 divisors (see below), whose sum is σ = 1399332. Its totient is φ = 932880.

The previous prime is 1166101. The next prime is 1166107. The reversal of 1166105 is 5016611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 687241 + 478864 = 829^2 + 692^2 .

It is not a de Polignac number, because 1166105 - 2² = 1166101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116606 + ... + 116615.

It is an arithmetic number, because the mean of its divisors is an integer number (349833).

2^1166105 is an apocalyptic number.

It is an amenable number.

1166105 is a deficient number, since it is larger than the sum of its proper divisors (233227).

1166105 is an equidigital number, since it uses as much as digits as its factorization.

1166105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233226.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1166105 is about 1079.8634172894. The cubic root of 1166105 is about 105.2557634937.

The spelling of 1166105 in words is "one million, one hundred sixty-six thousand, one hundred five".