818266 has 8 divisors (see below), whose sum is σ = 1241460. Its totient is φ = 404448.

The previous prime is 818249. The next prime is 818281. The reversal of 818266 is 662818.

It can be written as a sum of positive squares in 2 ways, for example, as 680625 + 137641 = 825^2 + 371^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2121 + ... + 2476.

2⁸¹⁸²⁶⁶ is an apocalyptic number.

818266 is a deficient number, since it is larger than the sum of its proper divisors (423194).

818266 is a wasteful number, since it uses less digits than its factorization.

818266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688.

The product of its digits is 4608, while the sum is 31.

The square root of 818266 is about 904.5805657873. The cubic root of 818266 is about 93.5329937798.

The spelling of 818266 in words is "eight hundred eighteen thousand, two hundred sixty-six".