71117916 has 24 divisors (see below), whose sum is σ = 166079760. Its totient is φ = 23686272.

The previous prime is 71117881. The next prime is 71117923. The reversal of 71117916 is 61971117.

It is a happy number.

It is a congruent number.

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, 23650 + ... + 26486.

It is an arithmetic number, because the mean of its divisors is an integer number (6919990).

Almost surely, 2^71117916 is an apocalyptic number.

It is an amenable number.

71117916 is an abundant number, since it is smaller than the sum of its proper divisors (94961844).

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

71117916 is a wasteful number, since it uses less digits than its factorization.

71117916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4933 (or 4931 counting only the distinct ones).

The product of its digits is 2646, while the sum is 33.

The square root of 71117916 is about 8433.1438977406. The cubic root of 71117916 is about 414.3108822715.

The spelling of 71117916 in words is "seventy-one million, one hundred seventeen thousand, nine hundred sixteen".