68039759 has 2 divisors, whose sum is σ = 68039760. Its totient is φ = 68039758.

The previous prime is 68039749. The next prime is 68039791. The reversal of 68039759 is 95793086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68039759 - 2⁴ = 68039743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68039749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34019879 + 34019880.

It is an arithmetic number, because the mean of its divisors is an integer number (34019880).

Almost surely, 2^68039759 is an apocalyptic number.

68039759 is a deficient number, since it is larger than the sum of its proper divisors (1).

68039759 is an equidigital number, since it uses as much as digits as its factorization.

68039759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 68039759 is about 8248.6216424321. The cubic root of 68039759 is about 408.2450449501.

The spelling of 68039759 in words is "sixty-eight million, thirty-nine thousand, seven hundred fifty-nine".