68198113 has 2 divisors, whose sum is σ = 68198114. Its totient is φ = 68198112.

The previous prime is 68198077. The next prime is 68198167. The reversal of 68198113 is 31189186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35856144 + 32341969 = 5988^2 + 5687^2 .

It is a cyclic number.

It is not a de Polignac number, because 68198113 - 2⁹ = 68197601 is a prime.

It is not a weakly prime, because it can be changed into another prime (68198413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34099056 + 34099057.

It is an arithmetic number, because the mean of its divisors is an integer number (34099057).

Almost surely, 2^68198113 is an apocalyptic number.

It is an amenable number.

68198113 is a deficient number, since it is larger than the sum of its proper divisors (1).

68198113 is an equidigital number, since it uses as much as digits as its factorization.

68198113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 37.

The square root of 68198113 is about 8258.2148797425. The cubic root of 68198113 is about 408.5615125996.

The spelling of 68198113 in words is "sixty-eight million, one hundred ninety-eight thousand, one hundred thirteen".