8640986936 has 16 divisors (see below), whose sum is σ = 16216690200. Its totient is φ = 4316536224.

The previous prime is 8640986927. The next prime is 8640986947. The reversal of 8640986936 is 6396890468.

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, 485366 + ... + 502853.

Almost surely, 2^8640986936 is an apocalyptic number.

It is an amenable number.

8640986936 is a deficient number, since it is larger than the sum of its proper divisors (7575703264).

8640986936 is a wasteful number, since it uses less digits than its factorization.

8640986936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989318 (or 989314 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 59.

The square root of 8640986936 is about 92956.9090277856. The cubic root of 8640986936 is about 2052.0492643716.

The spelling of 8640986936 in words is "eight billion, six hundred forty million, nine hundred eighty-six thousand, nine hundred thirty-six".