805411 has 4 divisors (see below), whose sum is σ = 831424. Its totient is φ = 779400.

The previous prime is 805403. The next prime is 805421. The reversal of 805411 is 114508.

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

It is a cyclic number.

It is not a de Polignac number, because 805411 - 2³ = 805403 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (805421) 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, 12960 + ... + 13021.

It is an arithmetic number, because the mean of its divisors is an integer number (207856).

2⁸⁰⁵⁴¹¹ is an apocalyptic number.

805411 is a deficient number, since it is larger than the sum of its proper divisors (26013).

805411 is a wasteful number, since it uses less digits than its factorization.

805411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26012.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 805411 is about 897.4469343644. The cubic root of 805411 is about 93.0406035365.

Adding to 805411 its reverse (114508), we get a palindrome (919919).

The spelling of 805411 in words is "eight hundred five thousand, four hundred eleven".