71718916 has 12 divisors (see below), whose sum is σ = 125621020. Its totient is φ = 35827200.

The previous prime is 71718887. The next prime is 71718929. The reversal of 71718916 is 61981717.

It can be written as a sum of positive squares in 2 ways, for example, as 23970816 + 47748100 = 4896^2 + 6910^2 .

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, 2661 + ... + 12268.

Almost surely, 2^71718916 is an apocalyptic number.

It is an amenable number.

71718916 is a deficient number, since it is larger than the sum of its proper divisors (53902104).

71718916 is a wasteful number, since it uses less digits than its factorization.

71718916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16134 (or 16132 counting only the distinct ones).

The product of its digits is 21168, while the sum is 40.

The square root of 71718916 is about 8468.7021437762. The cubic root of 71718916 is about 415.4746898082.

The spelling of 71718916 in words is "seventy-one million, seven hundred eighteen thousand, nine hundred sixteen".