8616716639 has 4 divisors (see below), whose sum is σ = 8617630056. Its totient is φ = 8615803224.

The previous prime is 8616716599. The next prime is 8616716663. The reversal of 8616716639 is 9366176168.

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

It is a cyclic number.

It is not a de Polignac number, because 8616716639 - 2¹² = 8616712543 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 (8616712639) 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, 442409 + ... + 461474.

It is an arithmetic number, because the mean of its divisors is an integer number (2154407514).

Almost surely, 2^8616716639 is an apocalyptic number.

8616716639 is a deficient number, since it is larger than the sum of its proper divisors (913417).

8616716639 is an equidigital number, since it uses as much as digits as its factorization.

8616716639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913416.

The product of its digits is 1959552, while the sum is 53.

The square root of 8616716639 is about 92826.2712759701. The cubic root of 8616716639 is about 2050.1262376357.

The spelling of 8616716639 in words is "eight billion, six hundred sixteen million, seven hundred sixteen thousand, six hundred thirty-nine".