818806 has 8 divisors (see below), whose sum is σ = 1256904. Its totient is φ = 399840.

The previous prime is 818723. The next prime is 818813. The reversal of 818806 is 608818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4675 + ... + 4846.

It is an arithmetic number, because the mean of its divisors is an integer number (157113).

2⁸¹⁸⁸⁰⁶ is an apocalyptic number.

818806 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

818806 is a deficient number, since it is larger than the sum of its proper divisors (438098).

818806 is a wasteful number, since it uses less digits than its factorization.

818806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 818806 is about 904.8789974356. The cubic root of 818806 is about 93.5535643971.

The spelling of 818806 in words is "eight hundred eighteen thousand, eight hundred six".