68395571 has 2 divisors, whose sum is σ = 68395572. Its totient is φ = 68395570.

The previous prime is 68395567. The next prime is 68395589. The reversal of 68395571 is 17559386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68395571 - 2² = 68395567 is a prime.

It is not a weakly prime, because it can be changed into another prime (68395501) 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, 34197785 + 34197786.

It is an arithmetic number, because the mean of its divisors is an integer number (34197786).

Almost surely, 2^68395571 is an apocalyptic number.

68395571 is a deficient number, since it is larger than the sum of its proper divisors (1).

68395571 is an equidigital number, since it uses as much as digits as its factorization.

68395571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 68395571 is about 8270.1614857269. The cubic root of 68395571 is about 408.9554433640.

The spelling of 68395571 in words is "sixty-eight million, three hundred ninety-five thousand, five hundred seventy-one".