68608618 has 8 divisors (see below), whose sum is σ = 110829348. Its totient is φ = 31665504.

The previous prime is 68608613. The next prime is 68608637. The reversal of 68608618 is 81680686.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68608089 + 529 = 8283^2 + 23^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68608613) 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, 1319371 + ... + 1319422.

Almost surely, 2^68608618 is an apocalyptic number.

68608618 is a deficient number, since it is larger than the sum of its proper divisors (42220730).

68608618 is a wasteful number, since it uses less digits than its factorization.

68608618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638808.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 68608618 is about 8283.0319328130. The cubic root of 68608618 is about 409.3796249346.

The spelling of 68608618 in words is "sixty-eight million, six hundred eight thousand, six hundred eighteen".