68730618 has 16 divisors (see below), whose sum is σ = 149957856. Its totient is φ = 20827440.

The previous prime is 68730617. The next prime is 68730631. The reversal of 68730618 is 81603786.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68730617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520621 + ... + 520752.

It is an arithmetic number, because the mean of its divisors is an integer number (9372366).

Almost surely, 2^68730618 is an apocalyptic number.

68730618 is an abundant number, since it is smaller than the sum of its proper divisors (81227238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68730618 is a wasteful number, since it uses less digits than its factorization.

68730618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041389.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 68730618 is about 8290.3931149253. The cubic root of 68730618 is about 409.6221345066.

The spelling of 68730618 in words is "sixty-eight million, seven hundred thirty thousand, six hundred eighteen".