68508188 has 24 divisors (see below), whose sum is σ = 137471712. Its totient is φ = 29263104.

The previous prime is 68508163. The next prime is 68508221. The reversal of 68508188 is 88180586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4856 + ... + 12672.

It is an arithmetic number, because the mean of its divisors is an integer number (5727988).

Almost surely, 2^68508188 is an apocalyptic number.

It is an amenable number.

68508188 is an abundant number, since it is smaller than the sum of its proper divisors (68963524).

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

68508188 is a wasteful number, since it uses less digits than its factorization.

68508188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8141 (or 8139 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 44.

The square root of 68508188 is about 8276.9673190124. The cubic root of 68508188 is about 409.1797760221.

The spelling of 68508188 in words is "sixty-eight million, five hundred eight thousand, one hundred eighty-eight".