791897 has 2 divisors, whose sum is σ = 791898. Its totient is φ = 791896.

The previous prime is 791891. The next prime is 791899. The reversal of 791897 is 798197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614656 + 177241 = 784^2 + 421^2 .

It is an emirp because it is prime and its reverse (798197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 791897 - 2¹⁴ = 775513 is a prime.

Together with 791899, 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 (791891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395948 + 395949.

It is an arithmetic number, because the mean of its divisors is an integer number (395949).

2⁷⁹¹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

791897 is a deficient number, since it is larger than the sum of its proper divisors (1).

791897 is an equidigital number, since it uses as much as digits as its factorization.

791897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 41.

The square root of 791897 is about 889.8859477484. The cubic root of 791897 is about 92.5172891958.

The spelling of 791897 in words is "seven hundred ninety-one thousand, eight hundred ninety-seven".