71216688 has 20 divisors (see below), whose sum is σ = 183976568. Its totient is φ = 23738880.

The previous prime is 71216687. The next prime is 71216711. The reversal of 71216688 is 88661217.

It is not an unprimeable number, because it can be changed into a prime (71216681) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 741793 + ... + 741888.

Almost surely, 2^71216688 is an apocalyptic number.

It is an amenable number.

71216688 is an abundant number, since it is smaller than the sum of its proper divisors (112759880).

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

71216688 is a wasteful number, since it uses less digits than its factorization.

71216688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483692 (or 1483686 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 71216688 is about 8438.9980447918. The cubic root of 71216688 is about 414.5025985384.

The spelling of 71216688 in words is "seventy-one million, two hundred sixteen thousand, six hundred eighty-eight".