68851723 has 2 divisors, whose sum is σ = 68851724. Its totient is φ = 68851722.

The previous prime is 68851721. The next prime is 68851747. The reversal of 68851723 is 32715886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68851723 - 2¹ = 68851721 is a prime.

Together with 68851721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68851721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34425861 + 34425862.

It is an arithmetic number, because the mean of its divisors is an integer number (34425862).

Almost surely, 2^68851723 is an apocalyptic number.

68851723 is a deficient number, since it is larger than the sum of its proper divisors (1).

68851723 is an equidigital number, since it uses as much as digits as its factorization.

68851723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 68851723 is about 8297.6938362415. The cubic root of 68851723 is about 409.8625813512.

The spelling of 68851723 in words is "sixty-eight million, eight hundred fifty-one thousand, seven hundred twenty-three".