812297 has 2 divisors, whose sum is σ = 812298. Its totient is φ = 812296.

The previous prime is 812281. The next prime is 812299. The reversal of 812297 is 792218.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808201 + 4096 = 899^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 812297 - 2⁴ = 812281 is a prime.

Together with 812299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (812299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406148 + 406149.

It is an arithmetic number, because the mean of its divisors is an integer number (406149).

2⁸¹²²⁹⁷ is an apocalyptic number.

It is an amenable number.

812297 is a deficient number, since it is larger than the sum of its proper divisors (1).

812297 is an equidigital number, since it uses as much as digits as its factorization.

812297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 812297 is about 901.2752076919. The cubic root of 812297 is about 93.3050069935.

The spelling of 812297 in words is "eight hundred twelve thousand, two hundred ninety-seven".