68881723 has 2 divisors, whose sum is σ = 68881724. Its totient is φ = 68881722.

The previous prime is 68881717. The next prime is 68881751. The reversal of 68881723 is 32718886.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68881723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68881723.

It is not a weakly prime, because it can be changed into another prime (68881793) 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, 34440861 + 34440862.

It is an arithmetic number, because the mean of its divisors is an integer number (34440862).

Almost surely, 2^68881723 is an apocalyptic number.

68881723 is a deficient number, since it is larger than the sum of its proper divisors (1).

68881723 is an equidigital number, since it uses as much as digits as its factorization.

68881723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 43.

The square root of 68881723 is about 8299.5013705644. The cubic root of 68881723 is about 409.9221010044.

The spelling of 68881723 in words is "sixty-eight million, eight hundred eighty-one thousand, seven hundred twenty-three".