68857618 has 8 divisors (see below), whose sum is σ = 103342140. Its totient is φ = 34410240.

The previous prime is 68857597. The next prime is 68857619. The reversal of 68857618 is 81675886.

It can be written as a sum of positive squares in 2 ways, for example, as 66961489 + 1896129 = 8183^2 + 1377^2 .

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 (68857619) 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, 4063 + ... + 12418.

Almost surely, 2^68857618 is an apocalyptic number.

68857618 is a deficient number, since it is larger than the sum of its proper divisors (34484522).

68857618 is a wasteful number, since it uses less digits than its factorization.

68857618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18572.

The product of its digits is 645120, while the sum is 49.

The square root of 68857618 is about 8298.0490478184. The cubic root of 68857618 is about 409.8742783277.

The spelling of 68857618 in words is "sixty-eight million, eight hundred fifty-seven thousand, six hundred eighteen".