68289618 has 16 divisors (see below), whose sum is σ = 137906496. Its totient is φ = 22542000.

The previous prime is 68289607. The next prime is 68289619. The reversal of 68289618 is 81698286.

It is not an unprimeable number, because it can be changed into a prime (68289619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54633 + ... + 55868.

It is an arithmetic number, because the mean of its divisors is an integer number (8619156).

Almost surely, 2^68289618 is an apocalyptic number.

68289618 is an abundant number, since it is smaller than the sum of its proper divisors (69616878).

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

68289618 is a wasteful number, since it uses less digits than its factorization.

68289618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110609.

The product of its digits is 331776, while the sum is 48.

The square root of 68289618 is about 8263.7532634996. The cubic root of 68289618 is about 408.7441604343.

The spelling of 68289618 in words is "sixty-eight million, two hundred eighty-nine thousand, six hundred eighteen".