68814618 has 32 divisors (see below), whose sum is σ = 146875200. Its totient is φ = 21430656.

The previous prime is 68814601. The next prime is 68814619. The reversal of 68814618 is 81641886.

It is a self number, because there is not a number n which added to its sum of digits gives 68814618.

It is not an unprimeable number, because it can be changed into a prime (68814619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4188 + ... + 12456.

It is an arithmetic number, because the mean of its divisors is an integer number (4589850).

Almost surely, 2^68814618 is an apocalyptic number.

68814618 is an abundant number, since it is smaller than the sum of its proper divisors (78060582).

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

68814618 is a wasteful number, since it uses less digits than its factorization.

68814618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8366.

The product of its digits is 73728, while the sum is 42.

The square root of 68814618 is about 8295.4576727267. The cubic root of 68814618 is about 409.7889415392.

The spelling of 68814618 in words is "sixty-eight million, eight hundred fourteen thousand, six hundred eighteen".