68618113 has 2 divisors, whose sum is σ = 68618114. Its totient is φ = 68618112.

The previous prime is 68618083. The next prime is 68618141. The reversal of 68618113 is 31181686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50239744 + 18378369 = 7088^2 + 4287^2 .

It is a cyclic number.

It is not a de Polignac number, because 68618113 - 2¹³ = 68609921 is a prime.

It is not a weakly prime, because it can be changed into another prime (68618213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34309056 + 34309057.

It is an arithmetic number, because the mean of its divisors is an integer number (34309057).

Almost surely, 2^68618113 is an apocalyptic number.

It is an amenable number.

68618113 is a deficient number, since it is larger than the sum of its proper divisors (1).

68618113 is an equidigital number, since it uses as much as digits as its factorization.

68618113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 68618113 is about 8283.6050726722. The cubic root of 68618113 is about 409.3985092495.

Adding to 68618113 its reverse (31181686), we get a palindrome (99799799).

The spelling of 68618113 in words is "sixty-eight million, six hundred eighteen thousand, one hundred thirteen".