863197 has 2 divisors, whose sum is σ = 863198. Its totient is φ = 863196.

The previous prime is 863179. The next prime is 863231. The reversal of 863197 is 791368.

Together with previous prime (863179) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (863231) can be obtained adding 863197 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 737881 + 125316 = 859^2 + 354^2 .

It is a cyclic number.

It is not a de Polignac number, because 863197 - 2¹⁹ = 338909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431598 + 431599.

It is an arithmetic number, because the mean of its divisors is an integer number (431599).

2⁸⁶³¹⁹⁷ is an apocalyptic number.

It is an amenable number.

863197 is a deficient number, since it is larger than the sum of its proper divisors (1).

863197 is an equidigital number, since it uses as much as digits as its factorization.

863197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 863197 is about 929.0839574549. The cubic root of 863197 is about 95.2145474203.

The spelling of 863197 in words is "eight hundred sixty-three thousand, one hundred ninety-seven".