812097 has 24 divisors (see below), whose sum is σ = 1380288. Its totient is φ = 453600.

The previous prime is 812081. The next prime is 812101. The reversal of 812097 is 790218.

It is not a de Polignac number, because 812097 - 2⁴ = 812081 is a prime.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 812097.

It is not an unprimeable number, because it can be changed into a prime (812047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 972 + ... + 1602.

It is an arithmetic number, because the mean of its divisors is an integer number (57512).

2⁸¹²⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

812097 is a deficient number, since it is larger than the sum of its proper divisors (568191).

812097 is a wasteful number, since it uses less digits than its factorization.

812097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 812097 is about 901.1642469606. The cubic root of 812097 is about 93.2973486562.

The spelling of 812097 in words is "eight hundred twelve thousand, ninety-seven".