68185518 has 8 divisors (see below), whose sum is σ = 136371048. Its totient is φ = 22728504.

The previous prime is 68185517. The next prime is 68185531. The reversal of 68185518 is 81558186.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

68185518 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 68185518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68185517) 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, 5682121 + ... + 5682132.

It is an arithmetic number, because the mean of its divisors is an integer number (17046381).

Almost surely, 2^68185518 is an apocalyptic number.

68185518 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.

68185518 is a wasteful number, since it uses less digits than its factorization.

68185518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11364258.

The product of its digits is 76800, while the sum is 42.

The square root of 68185518 is about 8257.4522705251. The cubic root of 68185518 is about 408.5363596600.

The spelling of 68185518 in words is "sixty-eight million, one hundred eighty-five thousand, five hundred eighteen".