71386716 has 24 divisors (see below), whose sum is σ = 168100240. Its totient is φ = 23576832.

The previous prime is 71386709. The next prime is 71386739. The reversal of 71386716 is 61768317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25981 + ... + 28596.

Almost surely, 2^71386716 is an apocalyptic number.

It is an amenable number.

71386716 is an abundant number, since it is smaller than the sum of its proper divisors (96713524).

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

71386716 is a wasteful number, since it uses less digits than its factorization.

71386716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54693 (or 54691 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 71386716 is about 8449.0659838825. The cubic root of 71386716 is about 414.8322077761.

The spelling of 71386716 in words is "seventy-one million, three hundred eighty-six thousand, seven hundred sixteen".