1166895 has 12 divisors (see below), whose sum is σ = 2022696. Its totient is φ = 622320.

The previous prime is 1166861. The next prime is 1166903. The reversal of 1166895 is 5986611.

It is not a de Polignac number, because 1166895 - 2⁸ = 1166639 is a prime.

1166895 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12921 + ... + 13010.

It is an arithmetic number, because the mean of its divisors is an integer number (168558).

2^1166895 is an apocalyptic number.

1166895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166895 is a deficient number, since it is larger than the sum of its proper divisors (855801).

1166895 is a wasteful number, since it uses less digits than its factorization.

1166895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25942 (or 25939 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1166895 is about 1080.2291423582. The cubic root of 1166895 is about 105.2795273008.

The spelling of 1166895 in words is "one million, one hundred sixty-six thousand, eight hundred ninety-five".