868557264 has 20 divisors (see below), whose sum is σ = 2243773056. Its totient is φ = 289519072.

The previous prime is 868557253. The next prime is 868557293. The reversal of 868557264 is 462755868.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 9047424 + ... + 9047519.

Almost surely, 2^868557264 is an apocalyptic number.

It is an amenable number.

868557264 is an abundant number, since it is smaller than the sum of its proper divisors (1375215792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868557264 is a wasteful number, since it uses less digits than its factorization.

868557264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18094954 (or 18094948 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The square root of 868557264 is about 29471.2955941879. The cubic root of 868557264 is about 954.1122801628.

The spelling of 868557264 in words is "eight hundred sixty-eight million, five hundred fifty-seven thousand, two hundred sixty-four".