68737679 has 2 divisors, whose sum is σ = 68737680. Its totient is φ = 68737678.

The previous prime is 68737657. The next prime is 68737709. The reversal of 68737679 is 97673786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68737679 - 2¹⁶ = 68672143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68737679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68737619) 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, 34368839 + 34368840.

It is an arithmetic number, because the mean of its divisors is an integer number (34368840).

Almost surely, 2^68737679 is an apocalyptic number.

68737679 is a deficient number, since it is larger than the sum of its proper divisors (1).

68737679 is an equidigital number, since it uses as much as digits as its factorization.

68737679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2667168, while the sum is 53.

The square root of 68737679 is about 8290.8189583418. The cubic root of 68737679 is about 409.6361614567.

The spelling of 68737679 in words is "sixty-eight million, seven hundred thirty-seven thousand, six hundred seventy-nine".