8716729 has 8 divisors (see below), whose sum is σ = 10005248. Its totient is φ = 7439040.

The previous prime is 8716727. The next prime is 8716753. The reversal of 8716729 is 9276178.

8716729 = 57² + 58² + ... + 297².

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

It is not a de Polignac number, because 8716729 - 2¹ = 8716727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8716691 and 8716700.

It is not an unprimeable number, because it can be changed into a prime (8716727) 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, 897 + ... + 4270.

It is an arithmetic number, because the mean of its divisors is an integer number (1250656).

Almost surely, 2^8716729 is an apocalyptic number.

It is an amenable number.

8716729 is a deficient number, since it is larger than the sum of its proper divisors (1288519).

8716729 is a wasteful number, since it uses less digits than its factorization.

8716729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415.

The product of its digits is 42336, while the sum is 40.

The square root of 8716729 is about 2952.4107099115. The cubic root of 8716729 is about 205.8027536659.

The spelling of 8716729 in words is "eight million, seven hundred sixteen thousand, seven hundred twenty-nine".