8387666670 has 16 divisors (see below), whose sum is σ = 20130400080. Its totient is φ = 2236711104.

The previous prime is 8387666663. The next prime is 8387666687. The reversal of 8387666670 is 766667838.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8387666670.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139794415 + ... + 139794474.

It is an arithmetic number, because the mean of its divisors is an integer number (1258150005).

Almost surely, 2^8387666670 is an apocalyptic number.

8387666670 is an abundant number, since it is smaller than the sum of its proper divisors (11742733410).

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

8387666670 is a wasteful number, since it uses less digits than its factorization.

8387666670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279588899.

The product of its (nonzero) digits is 12192768, while the sum is 57.

The square root of 8387666670 is about 91584.2053522331. The cubic root of 8387666670 is about 2031.7973412637.

The spelling of 8387666670 in words is "eight billion, three hundred eighty-seven million, six hundred sixty-six thousand, six hundred seventy".