71716589 has 8 divisors (see below), whose sum is σ = 82078080. Its totient is φ = 61384176.

The previous prime is 71716559. The next prime is 71716597. The reversal of 71716589 is 98561717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71716589 - 2¹² = 71712493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71716559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694 + ... + 12095.

It is an arithmetic number, because the mean of its divisors is an integer number (10259760).

Almost surely, 2^71716589 is an apocalyptic number.

It is an amenable number.

71716589 is a deficient number, since it is larger than the sum of its proper divisors (10361491).

71716589 is a wasteful number, since it uses less digits than its factorization.

71716589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14539.

The product of its digits is 105840, while the sum is 44.

The square root of 71716589 is about 8468.5647544315. The cubic root of 71716589 is about 415.4701962468.

The spelling of 71716589 in words is "seventy-one million, seven hundred sixteen thousand, five hundred eighty-nine".