68571823 has 2 divisors, whose sum is σ = 68571824. Its totient is φ = 68571822.

The previous prime is 68571821. The next prime is 68571847. The reversal of 68571823 is 32817586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68571823 - 2¹ = 68571821 is a prime.

Together with 68571821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68571821) 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, 34285911 + 34285912.

It is an arithmetic number, because the mean of its divisors is an integer number (34285912).

Almost surely, 2^68571823 is an apocalyptic number.

68571823 is a deficient number, since it is larger than the sum of its proper divisors (1).

68571823 is an equidigital number, since it uses as much as digits as its factorization.

68571823 is an odious number, because the sum of its binary digits is odd.

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

The square root of 68571823 is about 8280.8105279616. The cubic root of 68571823 is about 409.3064280227.

The spelling of 68571823 in words is "sixty-eight million, five hundred seventy-one thousand, eight hundred twenty-three".