68137007 has 2 divisors, whose sum is σ = 68137008. Its totient is φ = 68137006.

The previous prime is 68136997. The next prime is 68137009. The reversal of 68137007 is 70073186.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68137007 is a prime.

Together with 68137009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68137009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34068503 + 34068504.

It is an arithmetic number, because the mean of its divisors is an integer number (34068504).

Almost surely, 2^68137007 is an apocalyptic number.

68137007 is a deficient number, since it is larger than the sum of its proper divisors (1).

68137007 is an equidigital number, since it uses as much as digits as its factorization.

68137007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 68137007 is about 8254.5143406502. The cubic root of 68137007 is about 408.4394514514.

The spelling of 68137007 in words is "sixty-eight million, one hundred thirty-seven thousand, seven".