801808 has 20 divisors (see below), whose sum is σ = 1775680. Its totient is φ = 343584.

The previous prime is 801791. The next prime is 801809. The reversal of 801808 is 808108.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (801809) by changing a digit.

801808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 3468 + ... + 3691.

It is an arithmetic number, because the mean of its divisors is an integer number (88784).

2⁸⁰¹⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

801808 is an abundant number, since it is smaller than the sum of its proper divisors (973872).

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

801808 is a wasteful number, since it uses less digits than its factorization.

801808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7174 (or 7168 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 801808 is about 895.4373233231. The cubic root of 801808 is about 92.9016573270.

The spelling of 801808 in words is "eight hundred one thousand, eight hundred eight".