806813 has 4 divisors (see below), whose sum is σ = 922080. Its totient is φ = 691548.

The previous prime is 806807. The next prime is 806821. The reversal of 806813 is 318608.

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 806813 - 2¹⁰ = 805789 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 (806893) 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, 57623 + ... + 57636.

It is an arithmetic number, because the mean of its divisors is an integer number (230520).

2⁸⁰⁶⁸¹³ is an apocalyptic number.

It is an amenable number.

806813 is a deficient number, since it is larger than the sum of its proper divisors (115267).

806813 is a wasteful number, since it uses less digits than its factorization.

806813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115266.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 806813 is about 898.2276994170. The cubic root of 806813 is about 93.0945583127.

The spelling of 806813 in words is "eight hundred six thousand, eight hundred thirteen".