868539168 has 72 divisors (see below), whose sum is σ = 2822758848. Its totient is φ = 248153472.

The previous prime is 868539149. The next prime is 868539173. The reversal of 868539168 is 861935868.

It is a tau number, because it is divible by the number of its divisors (72).

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, 213396 + ... + 217427.

It is an arithmetic number, because the mean of its divisors is an integer number (39204984).

Almost surely, 2^868539168 is an apocalyptic number.

It is an amenable number.

868539168 is an abundant number, since it is smaller than the sum of its proper divisors (1954219680).

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

868539168 is a wasteful number, since it uses less digits than its factorization.

868539168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430846 (or 430835 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 868539168 is about 29470.9885819936. The cubic root of 868539168 is about 954.1056539500.

The spelling of 868539168 in words is "eight hundred sixty-eight million, five hundred thirty-nine thousand, one hundred sixty-eight".