865870874 has 16 divisors (see below), whose sum is σ = 1417334976. Its totient is φ = 393451200.

The previous prime is 865870853. The next prime is 865870891. The reversal of 865870874 is 478078568.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 118034 + ... + 125154.

It is an arithmetic number, because the mean of its divisors is an integer number (88583436).

Almost surely, 2^865870874 is an apocalyptic number.

865870874 is a deficient number, since it is larger than the sum of its proper divisors (551464102).

865870874 is a wasteful number, since it uses less digits than its factorization.

865870874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12661.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The square root of 865870874 is about 29425.6839172856. The cubic root of 865870874 is about 953.1275956127.

The spelling of 865870874 in words is "eight hundred sixty-five million, eight hundred seventy thousand, eight hundred seventy-four".