68205118 has 4 divisors (see below), whose sum is σ = 102307680. Its totient is φ = 34102558.

The previous prime is 68205113. The next prime is 68205119. The reversal of 68205118 is 81150286.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 68205118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68205113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17051278 + ... + 17051281.

It is an arithmetic number, because the mean of its divisors is an integer number (25576920).

Almost surely, 2^68205118 is an apocalyptic number.

68205118 is a deficient number, since it is larger than the sum of its proper divisors (34102562).

68205118 is a wasteful number, since it uses less digits than its factorization.

68205118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34102561.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 68205118 is about 8258.6389919889. The cubic root of 68205118 is about 408.5755006475.

The spelling of 68205118 in words is "sixty-eight million, two hundred five thousand, one hundred eighteen".