71216516 has 24 divisors (see below), whose sum is σ = 142644096. Its totient is φ = 30476160.

The previous prime is 71216507. The next prime is 71216539. The reversal of 71216516 is 61561217.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23225 + ... + 26111.

It is an arithmetic number, because the mean of its divisors is an integer number (5943504).

Almost surely, 2^71216516 is an apocalyptic number.

It is an amenable number.

71216516 is an abundant number, since it is smaller than the sum of its proper divisors (71427580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71216516 is a wasteful number, since it uses less digits than its factorization.

71216516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779 (or 3777 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 71216516 is about 8438.9878540024. The cubic root of 71216516 is about 414.5022648409.

The spelling of 71216516 in words is "seventy-one million, two hundred sixteen thousand, five hundred sixteen".