1166265 has 32 divisors (see below), whose sum is σ = 2125440. Its totient is φ = 606528.

The previous prime is 1166237. The next prime is 1166287. The reversal of 1166265 is 5626611.

It is a happy number.

It is not a de Polignac number, because 1166265 - 2¹¹ = 1164217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

1166265 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 31 ways as a sum of consecutive naturals, for example, 7074 + ... + 7236.

It is an arithmetic number, because the mean of its divisors is an integer number (66420).

2^1166265 is an apocalyptic number.

1166265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166265 is a deficient number, since it is larger than the sum of its proper divisors (959175).

1166265 is a wasteful number, since it uses less digits than its factorization.

1166265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 224 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1166265 is about 1079.9374981914. The cubic root of 1166265 is about 105.2605772832.

It can be divided in two parts, 1166 and 265, that added together give a triangular number (1431 = T₅₃).

The spelling of 1166265 in words is "one million, one hundred sixty-six thousand, two hundred sixty-five".