71356816 has 20 divisors (see below), whose sum is σ = 138582400. Its totient is φ = 35593632.

The previous prime is 71356811. The next prime is 71356841. The reversal of 71356816 is 61865317.

It is not an unprimeable number, because it can be changed into a prime (71356811) 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, 1945 + ... + 12103.

It is an arithmetic number, because the mean of its divisors is an integer number (6929120).

Almost surely, 2^71356816 is an apocalyptic number.

It is an amenable number.

71356816 is a deficient number, since it is larger than the sum of its proper divisors (67225584).

71356816 is a wasteful number, since it uses less digits than its factorization.

71356816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10606 (or 10600 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 71356816 is about 8447.2963722128. The cubic root of 71356816 is about 414.7742828295.

The spelling of 71356816 in words is "seventy-one million, three hundred fifty-six thousand, eight hundred sixteen".