811264 has 18 divisors (see below), whose sum is σ = 1619870. Its totient is φ = 405504.

The previous prime is 811259. The next prime is 811273. The reversal of 811264 is 462118.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 36864 = 880^2 + 192^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329 + ... + 1840.

2⁸¹¹²⁶⁴ is an apocalyptic number.

It is an amenable number.

811264 is a deficient number, since it is larger than the sum of its proper divisors (808606).

811264 is an equidigital number, since it uses as much as digits as its factorization.

811264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185 (or 3171 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 811264 is about 900.7019484824. The cubic root of 811264 is about 93.2654381501.

The spelling of 811264 in words is "eight hundred eleven thousand, two hundred sixty-four".