1165826 has 12 divisors (see below), whose sum is σ = 1858578. Its totient is φ = 548352.

The previous prime is 1165823. The next prime is 1165831. The reversal of 1165826 is 6285611.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1155625 + 10201 = 1075^2 + 101^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1165823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431 + ... + 1586.

2^1165826 is an apocalyptic number.

1165826 is a deficient number, since it is larger than the sum of its proper divisors (692752).

1165826 is a wasteful number, since it uses less digits than its factorization.

1165826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 2036 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 1165826 is about 1079.7342265576. The cubic root of 1165826 is about 105.2473683948.

It can be divided in two parts, 1165 and 826, that added together give a palindrome (1991).

The spelling of 1165826 in words is "one million, one hundred sixty-five thousand, eight hundred twenty-six".