808813 has 4 divisors (see below), whose sum is σ = 816480. Its totient is φ = 801148.

The previous prime is 808793. The next prime is 808837. The reversal of 808813 is 318808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 808813 - 2¹³ = 800621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808853) 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, 3673 + ... + 3886.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

2⁸⁰⁸⁸¹³ is an apocalyptic number.

It is an amenable number.

808813 is a deficient number, since it is larger than the sum of its proper divisors (7667).

808813 is a wasteful number, since it uses less digits than its factorization.

808813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7666.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 808813 is about 899.3403137856. The cubic root of 808813 is about 93.1714185354.

The spelling of 808813 in words is "eight hundred eight thousand, eight hundred thirteen".