68667618 has 8 divisors (see below), whose sum is σ = 137335248. Its totient is φ = 22889204.

The previous prime is 68667617. The next prime is 68667623. The reversal of 68667618 is 81676686.

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

68667618 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68667617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5722296 + ... + 5722307.

It is an arithmetic number, because the mean of its divisors is an integer number (17166906).

Almost surely, 2^68667618 is an apocalyptic number.

68667618 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.

68667618 is a wasteful number, since it uses less digits than its factorization.

68667618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11444608.

The product of its digits is 580608, while the sum is 48.

The square root of 68667618 is about 8286.5926652636. The cubic root of 68667618 is about 409.4969400199.

The spelling of 68667618 in words is "sixty-eight million, six hundred sixty-seven thousand, six hundred eighteen".