71395897 has 2 divisors, whose sum is σ = 71395898. Its totient is φ = 71395896.

The previous prime is 71395879. The next prime is 71395921. The reversal of 71395897 is 79859317.

Together with previous prime (71395879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62980096 + 8415801 = 7936^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 71395897 - 2¹⁵ = 71363129 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71395897.

It is not a weakly prime, because it can be changed into another prime (71395817) 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, 35697948 + 35697949.

It is an arithmetic number, because the mean of its divisors is an integer number (35697949).

Almost surely, 2^71395897 is an apocalyptic number.

It is an amenable number.

71395897 is a deficient number, since it is larger than the sum of its proper divisors (1).

71395897 is an equidigital number, since it uses as much as digits as its factorization.

71395897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 71395897 is about 8449.6092809076. The cubic root of 71395897 is about 414.8499907823.

The spelling of 71395897 in words is "seventy-one million, three hundred ninety-five thousand, eight hundred ninety-seven".