68887218 has 8 divisors (see below), whose sum is σ = 137774448. Its totient is φ = 22962404.

The previous prime is 68887211. The next prime is 68887219. The reversal of 68887218 is 81278886.

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

68887218 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68887211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5740596 + ... + 5740607.

It is an arithmetic number, because the mean of its divisors is an integer number (17221806).

Almost surely, 2^68887218 is an apocalyptic number.

68887218 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.

68887218 is a wasteful number, since it uses less digits than its factorization.

68887218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11481208.

The product of its digits is 344064, while the sum is 48.

The square root of 68887218 is about 8299.8324079466. The cubic root of 68887218 is about 409.9330011482.

The spelling of 68887218 in words is "sixty-eight million, eight hundred eighty-seven thousand, two hundred eighteen".