8515787660 has 12 divisors (see below), whose sum is σ = 17883154128. Its totient is φ = 3406315056.

The previous prime is 8515787653. The next prime is 8515787701. The reversal of 8515787660 is 667875158.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212894672 + ... + 212894711.

It is an arithmetic number, because the mean of its divisors is an integer number (1490262844).

Almost surely, 2^8515787660 is an apocalyptic number.

It is an amenable number.

8515787660 is an abundant number, since it is smaller than the sum of its proper divisors (9367366468).

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

8515787660 is a wasteful number, since it uses less digits than its factorization.

8515787660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425789392 (or 425789390 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 53.

The square root of 8515787660 is about 92281.0254602754. The cubic root of 8515787660 is about 2042.0902946428.

The spelling of 8515787660 in words is "eight billion, five hundred fifteen million, seven hundred eighty-seven thousand, six hundred sixty".