68061618 has 24 divisors (see below), whose sum is σ = 147883008. Its totient is φ = 22623192.

The previous prime is 68061613. The next prime is 68061619. The reversal of 68061618 is 81616086.

It is not an unprimeable number, because it can be changed into a prime (68061613) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1455 + ... + 11757.

It is an arithmetic number, because the mean of its divisors is an integer number (6161792).

Almost surely, 2^68061618 is an apocalyptic number.

68061618 is an abundant number, since it is smaller than the sum of its proper divisors (79821390).

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

68061618 is a wasteful number, since it uses less digits than its factorization.

68061618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10678 (or 10675 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 68061618 is about 8249.9465452814. The cubic root of 68061618 is about 408.2887589642.

The spelling of 68061618 in words is "sixty-eight million, sixty-one thousand, six hundred eighteen".