71711347 has 4 divisors (see below), whose sum is σ = 71771680. Its totient is φ = 71651016.

The previous prime is 71711323. The next prime is 71711357. The reversal of 71711347 is 74311717.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71711347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71711357) 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 in 3 ways as a sum of consecutive naturals, for example, 28347 + ... + 30772.

It is an arithmetic number, because the mean of its divisors is an integer number (17942920).

Almost surely, 2^71711347 is an apocalyptic number.

71711347 is a deficient number, since it is larger than the sum of its proper divisors (60333).

71711347 is a wasteful number, since it uses less digits than its factorization.

71711347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60332.

The product of its digits is 4116, while the sum is 31.

The square root of 71711347 is about 8468.2552512309. The cubic root of 71711347 is about 415.4600733084.

The spelling of 71711347 in words is "seventy-one million, seven hundred eleven thousand, three hundred forty-seven".