868643975 has 12 divisors (see below), whose sum is σ = 1078368480. Its totient is φ = 694108800.

The previous prime is 868643969. The next prime is 868643981. The reversal of 868643975 is 579346868.

It is an interprime number because it is at equal distance from previous prime (868643969) and next prime (868643981).

It is not a de Polignac number, because 868643975 - 2⁸ = 868643719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 868643975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2306 + ... + 41744.

It is an arithmetic number, because the mean of its divisors is an integer number (89864040).

Almost surely, 2^868643975 is an apocalyptic number.

868643975 is a deficient number, since it is larger than the sum of its proper divisors (209724505).

868643975 is a wasteful number, since it uses less digits than its factorization.

868643975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40330 (or 40325 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The square root of 868643975 is about 29472.7666668740. The cubic root of 868643975 is about 954.1440298548.

The spelling of 868643975 in words is "eight hundred sixty-eight million, six hundred forty-three thousand, nine hundred seventy-five".