168563808 has 192 divisors, whose sum is σ = 574801920. Its totient is φ = 47056896.

The previous prime is 168563777. The next prime is 168563809. The reversal of 168563808 is 808365861.

168563808 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 638 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168563809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283960 + ... + 284552.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^168563808 is an apocalyptic number.

168563808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168563808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287400960).

168563808 is an abundant number, since it is smaller than the sum of its proper divisors (406238112).

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

168563808 is a wasteful number, since it uses less digits than its factorization.

168563808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 168563808 is about 12983.2125454373. The cubic root of 168563808 is about 552.4014093513.

The spelling of 168563808 in words is "one hundred sixty-eight million, five hundred sixty-three thousand, eight hundred eight".