71716287 has 4 divisors (see below), whose sum is σ = 95621720. Its totient is φ = 47810856.

The previous prime is 71716273. The next prime is 71716301. The reversal of 71716287 is 78261717.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (71716273) and next prime (71716301).

It is not a de Polignac number, because 71716287 - 2¹⁰ = 71715263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71716487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11952712 + ... + 11952717.

It is an arithmetic number, because the mean of its divisors is an integer number (23905430).

Almost surely, 2^71716287 is an apocalyptic number.

71716287 is a deficient number, since it is larger than the sum of its proper divisors (23905433).

71716287 is a wasteful number, since it uses less digits than its factorization.

71716287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23905432.

The product of its digits is 32928, while the sum is 39.

The square root of 71716287 is about 8468.5469237644. The cubic root of 71716287 is about 415.4696130616.

The spelling of 71716287 in words is "seventy-one million, seven hundred sixteen thousand, two hundred eighty-seven".