68739859 has 2 divisors, whose sum is σ = 68739860. Its totient is φ = 68739858.

The previous prime is 68739817. The next prime is 68739877. The reversal of 68739859 is 95893786.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68739859 - 2¹¹ = 68737811 is a prime.

It is not a weakly prime, because it can be changed into another prime (68739899) 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, 34369929 + 34369930.

It is an arithmetic number, because the mean of its divisors is an integer number (34369930).

Almost surely, 2^68739859 is an apocalyptic number.

68739859 is a deficient number, since it is larger than the sum of its proper divisors (1).

68739859 is an equidigital number, since it uses as much as digits as its factorization.

68739859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 55.

The square root of 68739859 is about 8290.9504280269. The cubic root of 68739859 is about 409.6404919171.

The spelling of 68739859 in words is "sixty-eight million, seven hundred thirty-nine thousand, eight hundred fifty-nine".