8639914064 has 20 divisors (see below), whose sum is σ = 16782878580. Its totient is φ = 4308848640.

The previous prime is 8639914057. The next prime is 8639914069. The reversal of 8639914064 is 4604199368.

It can be written as a sum of positive squares in 2 ways, for example, as 1295424064 + 7344490000 = 35992^2 + 85700^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8639914069) 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, 687857 + ... + 700304.

It is an arithmetic number, because the mean of its divisors is an integer number (839143929).

Almost surely, 2^8639914064 is an apocalyptic number.

It is an amenable number.

8639914064 is a deficient number, since it is larger than the sum of its proper divisors (8142964516).

8639914064 is a wasteful number, since it uses less digits than its factorization.

8639914064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388558 (or 1388552 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 8639914064 is about 92951.1380457496. The cubic root of 8639914064 is about 2051.9643328185.

The spelling of 8639914064 in words is "eight billion, six hundred thirty-nine million, nine hundred fourteen thousand, sixty-four".