71711216 has 20 divisors (see below), whose sum is σ = 140504400. Its totient is φ = 35452032.

The previous prime is 71711191. The next prime is 71711221. The reversal of 71711216 is 61211717.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23756 + ... + 26603.

It is an arithmetic number, because the mean of its divisors is an integer number (7025220).

Almost surely, 2^71711216 is an apocalyptic number.

It is an amenable number.

71711216 is a deficient number, since it is larger than the sum of its proper divisors (68793184).

71711216 is a wasteful number, since it uses less digits than its factorization.

71711216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50456 (or 50450 counting only the distinct ones).

The product of its digits is 588, while the sum is 26.

The square root of 71711216 is about 8468.2475164582. The cubic root of 71711216 is about 415.4598203252.

It can be divided in two parts, 7171121 and 6, that multiplied together give a triangular number (43026726 = T₉₂₇₆).

The spelling of 71711216 in words is "seventy-one million, seven hundred eleven thousand, two hundred sixteen".