8719787264 has 36 divisors (see below), whose sum is σ = 17733946356. Its totient is φ = 4277624832.

The previous prime is 8719787257. The next prime is 8719787281. The reversal of 8719787264 is 4627879178.

It can be written as a sum of positive squares in 2 ways, for example, as 6755524864 + 1964262400 = 82192^2 + 44320^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307769 + ... + 334904.

It is an arithmetic number, because the mean of its divisors is an integer number (492609621).

Almost surely, 2^8719787264 is an apocalyptic number.

It is an amenable number.

8719787264 is an abundant number, since it is smaller than the sum of its proper divisors (9014159092).

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

8719787264 is an equidigital number, since it uses as much as digits as its factorization.

8719787264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642742 (or 642728 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 59.

The square root of 8719787264 is about 93379.8011563529. The cubic root of 8719787264 is about 2058.2681948072.

The spelling of 8719787264 in words is "eight billion, seven hundred nineteen million, seven hundred eighty-seven thousand, two hundred sixty-four".