68612218 has 16 divisors (see below), whose sum is σ = 103916736. Its totient is φ = 33975360.

The previous prime is 68612191. The next prime is 68612227. The reversal of 68612218 is 81221686.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136155 + ... + 136657.

It is an arithmetic number, because the mean of its divisors is an integer number (6494796).

Almost surely, 2^68612218 is an apocalyptic number.

68612218 is a deficient number, since it is larger than the sum of its proper divisors (35304518).

68612218 is a wasteful number, since it uses less digits than its factorization.

68612218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029.

The product of its digits is 9216, while the sum is 34.

The square root of 68612218 is about 8283.2492416925. The cubic root of 68612218 is about 409.3867850695.

The spelling of 68612218 in words is "sixty-eight million, six hundred twelve thousand, two hundred eighteen".