68106218 has 4 divisors (see below), whose sum is σ = 102159330. Its totient is φ = 34053108.

The previous prime is 68106211. The next prime is 68106221. The reversal of 68106218 is 81260186.

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

It can be written as a sum of positive squares in only one way, i.e., 58415449 + 9690769 = 7643^2 + 3113^2 .

It is not an unprimeable number, because it can be changed into a prime (68106211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17026553 + ... + 17026556.

Almost surely, 2^68106218 is an apocalyptic number.

68106218 is a deficient number, since it is larger than the sum of its proper divisors (34053112).

68106218 is a wasteful number, since it uses less digits than its factorization.

68106218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34053111.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 68106218 is about 8252.6491504244. The cubic root of 68106218 is about 408.3779218096.

The spelling of 68106218 in words is "sixty-eight million, one hundred six thousand, two hundred eighteen".