68189071 has 2 divisors, whose sum is σ = 68189072. Its totient is φ = 68189070.

The previous prime is 68189053. The next prime is 68189123. The reversal of 68189071 is 17098186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68189071 - 2⁷ = 68188943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68189021) 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, 34094535 + 34094536.

It is an arithmetic number, because the mean of its divisors is an integer number (34094536).

Almost surely, 2^68189071 is an apocalyptic number.

68189071 is a deficient number, since it is larger than the sum of its proper divisors (1).

68189071 is an equidigital number, since it uses as much as digits as its factorization.

68189071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 68189071 is about 8257.6674067196. The cubic root of 68189071 is about 408.5434555190.

The spelling of 68189071 in words is "sixty-eight million, one hundred eighty-nine thousand, seventy-one".