8387056566 has 24 divisors (see below), whose sum is σ = 20767949904. Its totient is φ = 2396301840.

The previous prime is 8387056501. The next prime is 8387056619. The reversal of 8387056566 is 6656507838.

8387056566 is a `hidden beast` number, since 8 + 3 + 8 + 70 + 5 + 6 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33281845 + ... + 33282096.

It is an arithmetic number, because the mean of its divisors is an integer number (865331246).

Almost surely, 2^8387056566 is an apocalyptic number.

8387056566 is an abundant number, since it is smaller than the sum of its proper divisors (12380893338).

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

8387056566 is a wasteful number, since it uses less digits than its factorization.

8387056566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66563956 (or 66563953 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The square root of 8387056566 is about 91580.8744553141. The cubic root of 8387056566 is about 2031.7480769573.

The spelling of 8387056566 in words is "eight billion, three hundred eighty-seven million, fifty-six thousand, five hundred sixty-six".