168536868 has 24 divisors (see below), whose sum is σ = 393675072. Its totient is φ = 56118624.

The previous prime is 168536867. The next prime is 168536869. The reversal of 168536868 is 868635861.

It is an interprime number because it is at equal distance from previous prime (168536867) and next prime (168536869).

It is a self number, because there is not a number n which added to its sum of digits gives 168536868.

It is not an unprimeable number, because it can be changed into a prime (168536867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4921 + ... + 19007.

It is an arithmetic number, because the mean of its divisors is an integer number (16403128).

Almost surely, 2^168536868 is an apocalyptic number.

It is an amenable number.

168536868 is an abundant number, since it is smaller than the sum of its proper divisors (225138204).

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

168536868 is a wasteful number, since it uses less digits than its factorization.

168536868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15091 (or 15089 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 168536868 is about 12982.1750103748. The cubic root of 168536868 is about 552.3719793746.

The spelling of 168536868 in words is "one hundred sixty-eight million, five hundred thirty-six thousand, eight hundred sixty-eight".