68724618 has 8 divisors (see below), whose sum is σ = 137449248. Its totient is φ = 22908204.

The previous prime is 68724563. The next prime is 68724629. The reversal of 68724618 is 81642786.

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

68724618 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 68724618.

It is an unprimeable number.

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, 5727046 + ... + 5727057.

It is an arithmetic number, because the mean of its divisors is an integer number (17181156).

Almost surely, 2^68724618 is an apocalyptic number.

68724618 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.

68724618 is a wasteful number, since it uses less digits than its factorization.

68724618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454108.

The product of its digits is 129024, while the sum is 42.

The square root of 68724618 is about 8290.0312424019. The cubic root of 68724618 is about 409.6102145191.

The spelling of 68724618 in words is "sixty-eight million, seven hundred twenty-four thousand, six hundred eighteen".