865075223 has 2 divisors, whose sum is σ = 865075224. Its totient is φ = 865075222.

The previous prime is 865075199. The next prime is 865075261. The reversal of 865075223 is 322570568.

It is an a-pointer prime, because the next prime (865075261) can be obtained adding 865075223 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 865075223 - 2⁸ = 865074967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865075273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432537611 + 432537612.

It is an arithmetic number, because the mean of its divisors is an integer number (432537612).

Almost surely, 2^865075223 is an apocalyptic number.

865075223 is a deficient number, since it is larger than the sum of its proper divisors (1).

865075223 is an equidigital number, since it uses as much as digits as its factorization.

865075223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 865075223 is about 29412.1611412694. The cubic root of 865075223 is about 952.8355623349.

The spelling of 865075223 in words is "eight hundred sixty-five million, seventy-five thousand, two hundred twenty-three".