811097 has 6 divisors (see below), whose sum is σ = 943578. Its totient is φ = 695184.

The previous prime is 811081. The next prime is 811099. The reversal of 811097 is 790118.

It can be written as a sum of positive squares in only one way, i.e., 802816 + 8281 = 896^2 + 91^2 .

It is not a de Polignac number, because 811097 - 2⁴ = 811081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811099) 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, 8228 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (157263).

2⁸¹¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

811097 is a deficient number, since it is larger than the sum of its proper divisors (132481).

811097 is a wasteful number, since it uses less digits than its factorization.

811097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16567 (or 16560 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 811097 is about 900.6092382382. The cubic root of 811097 is about 93.2590380974.

The spelling of 811097 in words is "eight hundred eleven thousand, ninety-seven".