71308063 has 4 divisors (see below), whose sum is σ = 71346600. Its totient is φ = 71269528.

The previous prime is 71308043. The next prime is 71308067. The reversal of 71308063 is 36080317.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71308063 - 2⁵ = 71308031 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16345 + ... + 20242.

It is an arithmetic number, because the mean of its divisors is an integer number (17836650).

Almost surely, 2^71308063 is an apocalyptic number.

71308063 is a deficient number, since it is larger than the sum of its proper divisors (38537).

71308063 is a wasteful number, since it uses less digits than its factorization.

71308063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38536.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 71308063 is about 8444.4101629421. The cubic root of 71308063 is about 414.6797994580.

The spelling of 71308063 in words is "seventy-one million, three hundred eight thousand, sixty-three".