71398163 has 2 divisors, whose sum is σ = 71398164. Its totient is φ = 71398162.

The previous prime is 71398157. The next prime is 71398169. The reversal of 71398163 is 36189317.

It is a balanced prime because it is at equal distance from previous prime (71398157) and next prime (71398169).

It is an emirp because it is prime and its reverse (36189317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71398163 - 2⁶ = 71398099 is a prime.

It is not a weakly prime, because it can be changed into another prime (71398169) 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, 35699081 + 35699082.

It is an arithmetic number, because the mean of its divisors is an integer number (35699082).

Almost surely, 2^71398163 is an apocalyptic number.

71398163 is a deficient number, since it is larger than the sum of its proper divisors (1).

71398163 is an equidigital number, since it uses as much as digits as its factorization.

71398163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 71398163 is about 8449.7433688841. The cubic root of 71398163 is about 414.8543796439.

The spelling of 71398163 in words is "seventy-one million, three hundred ninety-eight thousand, one hundred sixty-three".