864227975 has 72 divisors (see below), whose sum is σ = 1222100352. Its totient is φ = 605404800.

The previous prime is 864227899. The next prime is 864228011. The reversal of 864227975 is 579722468.

It is not a de Polignac number, because 864227975 - 2⁸ = 864227719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 71 ways as a sum of consecutive naturals, for example, 12172190 + ... + 12172260.

It is an arithmetic number, because the mean of its divisors is an integer number (16973616).

Almost surely, 2^864227975 is an apocalyptic number.

864227975 is a deficient number, since it is larger than the sum of its proper divisors (357872377).

864227975 is a wasteful number, since it uses less digits than its factorization.

864227975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 199 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 864227975 is about 29397.7545911248. The cubic root of 864227975 is about 952.5243941277.

The spelling of 864227975 in words is "eight hundred sixty-four million, two hundred twenty-seven thousand, nine hundred seventy-five".