68111137 has 2 divisors, whose sum is σ = 68111138. Its totient is φ = 68111136.

The previous prime is 68111107. The next prime is 68111149. The reversal of 68111137 is 73111186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 23435281 = 6684^2 + 4841^2 .

It is a cyclic number.

It is not a de Polignac number, because 68111137 - 2⁷ = 68111009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68111107) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34055568 + 34055569.

It is an arithmetic number, because the mean of its divisors is an integer number (34055569).

Almost surely, 2^68111137 is an apocalyptic number.

It is an amenable number.

68111137 is a deficient number, since it is larger than the sum of its proper divisors (1).

68111137 is an equidigital number, since it uses as much as digits as its factorization.

68111137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 28.

The square root of 68111137 is about 8252.9471705567. The cubic root of 68111137 is about 408.3877533282.

The spelling of 68111137 in words is "sixty-eight million, one hundred eleven thousand, one hundred thirty-seven".