805868 has 24 divisors (see below), whose sum is σ = 1707552. Its totient is φ = 324864.

The previous prime is 805867. The next prime is 805873. The reversal of 805868 is 868508.

It is a super-4 number, since 4×805868⁴ (a number of 25 digits) contains 4444 as substring.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805868.

It is not an unprimeable number, because it can be changed into a prime (805867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (71148).

2⁸⁰⁵⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

805868 is an abundant number, since it is smaller than the sum of its proper divisors (901684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805868 is a wasteful number, since it uses less digits than its factorization.

805868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 805868 is about 897.7015094117. The cubic root of 805868 is about 93.0581976660.

The spelling of 805868 in words is "eight hundred five thousand, eight hundred sixty-eight".