68208218 has 16 divisors (see below), whose sum is σ = 110344416. Its totient is φ = 31434480.

The previous prime is 68208193. The next prime is 68208227. The reversal of 68208218 is 81280286.

It is a super-2 number, since 2×68208218² = 9304722005471048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21473 + ... + 24443.

It is an arithmetic number, because the mean of its divisors is an integer number (6896526).

Almost surely, 2^68208218 is an apocalyptic number.

68208218 is a deficient number, since it is larger than the sum of its proper divisors (42136198).

68208218 is a wasteful number, since it uses less digits than its factorization.

68208218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 68208218 is about 8258.8266721127. The cubic root of 68208218 is about 408.5816906271.

The spelling of 68208218 in words is "sixty-eight million, two hundred eight thousand, two hundred eighteen".