218654068 has 24 divisors (see below), whose sum is σ = 407659392. Its totient is φ = 102259584.

The previous prime is 218654039. The next prime is 218654081. The reversal of 218654068 is 860456812.

It is a self number, because there is not a number n which added to its sum of digits gives 218654068.

It is a congruent number.

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, 1221 + ... + 20947.

It is an arithmetic number, because the mean of its divisors is an integer number (16985808).

Almost surely, 2^218654068 is an apocalyptic number.

It is an amenable number.

218654068 is a deficient number, since it is larger than the sum of its proper divisors (189005324).

218654068 is a wasteful number, since it uses less digits than its factorization.

218654068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19911 (or 19909 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 218654068 is about 14786.9560085908. The cubic root of 218654068 is about 602.4474732535.

The spelling of 218654068 in words is "two hundred eighteen million, six hundred fifty-four thousand, sixty-eight".