811073 has 6 divisors (see below), whose sum is σ = 828594. Its totient is φ = 793904.

The previous prime is 811067. The next prime is 811081. The reversal of 811073 is 370118.

It can be written as a sum of positive squares in only one way, i.e., 588289 + 222784 = 767^2 + 472^2 .

It is not a de Polignac number, because 811073 - 2¹⁰ = 810049 is a prime.

It is a super-2 number, since 2×811073² = 1315678822658, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3365 + ... + 3597.

It is an arithmetic number, because the mean of its divisors is an integer number (138099).

2⁸¹¹⁰⁷³ is an apocalyptic number.

It is an amenable number.

811073 is a deficient number, since it is larger than the sum of its proper divisors (17521).

811073 is an equidigital number, since it uses as much as digits as its factorization.

811073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 811073 is about 900.5959138260. The cubic root of 811073 is about 93.2581182571.

The spelling of 811073 in words is "eight hundred eleven thousand, seventy-three".