805011 has 16 divisors (see below), whose sum is σ = 1171200. Its totient is φ = 489888.

The previous prime is 804997. The next prime is 805019. The reversal of 805011 is 110508.

It is a happy number.

It is not a de Polignac number, because 805011 - 2¹⁰ = 803987 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805011.

It is not an unprimeable number, because it can be changed into a prime (805019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410 + ... + 1896.

It is an arithmetic number, because the mean of its divisors is an integer number (73200).

2⁸⁰⁵⁰¹¹ is an apocalyptic number.

805011 is a deficient number, since it is larger than the sum of its proper divisors (366189).

805011 is a wasteful number, since it uses less digits than its factorization.

805011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 805011 is about 897.2240522857. The cubic root of 805011 is about 93.0251983979.

Adding to 805011 its reverse (110508), we get a palindrome (915519).

The spelling of 805011 in words is "eight hundred five thousand, eleven".