168621168 has 40 divisors (see below), whose sum is σ = 437503248. Its totient is φ = 55962112.

The previous prime is 168621163. The next prime is 168621169. The reversal of 168621168 is 861126861.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168621163) 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, 3646 + ... + 18722.

Almost surely, 2^168621168 is an apocalyptic number.

It is an amenable number.

168621168 is an abundant number, since it is smaller than the sum of its proper divisors (268882080).

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

168621168 is a wasteful number, since it uses less digits than its factorization.

168621168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15321 (or 15315 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 168621168 is about 12985.4213639758. The cubic root of 168621168 is about 552.4640605056.

The spelling of 168621168 in words is "one hundred sixty-eight million, six hundred twenty-one thousand, one hundred sixty-eight".