178638068 has 12 divisors (see below), whose sum is σ = 357276192. Its totient is φ = 76559160.

The previous prime is 178638067. The next prime is 178638127. The reversal of 178638068 is 860836871.

178638068 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (178638067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189938 + ... + 3189993.

It is an arithmetic number, because the mean of its divisors is an integer number (29773016).

Almost surely, 2^178638068 is an apocalyptic number.

It is an amenable number.

178638068 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

178638068 is a wasteful number, since it uses less digits than its factorization.

178638068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379942 (or 6379940 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 178638068 is about 13365.5552821422. Note that the first 3 decimals coincide. The cubic root of 178638068 is about 563.1939805241.

The spelling of 178638068 in words is "one hundred seventy-eight million, six hundred thirty-eight thousand, sixty-eight".