71308065 has 16 divisors (see below), whose sum is σ = 117177408. Its totient is φ = 37002816.

The previous prime is 71308043. The next prime is 71308067. The reversal of 71308065 is 56080317.

It is not a de Polignac number, because 71308065 - 2¹¹ = 71306017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71308067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63687 + ... + 64796.

It is an arithmetic number, because the mean of its divisors is an integer number (7323588).

Almost surely, 2^71308065 is an apocalyptic number.

It is an amenable number.

71308065 is a deficient number, since it is larger than the sum of its proper divisors (45869343).

71308065 is a wasteful number, since it uses less digits than its factorization.

71308065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128528.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 71308065 is about 8444.4102813636. The cubic root of 71308065 is about 414.6798033349.

The spelling of 71308065 in words is "seventy-one million, three hundred eight thousand, sixty-five".