8666863472 has 20 divisors (see below), whose sum is σ = 16793802360. Its totient is φ = 4332979008.

The previous prime is 8666863463. The next prime is 8666863489. The reversal of 8666863472 is 2743686668.

It is a super-2 number, since 2×8666863472² (a number of 21 digits) contains 22 as substring.

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, 173054 + ... + 217442.

It is an arithmetic number, because the mean of its divisors is an integer number (839690118).

Almost surely, 2^8666863472 is an apocalyptic number.

It is an amenable number.

8666863472 is a deficient number, since it is larger than the sum of its proper divisors (8126938888).

8666863472 is a wasteful number, since it uses less digits than its factorization.

8666863472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56600 (or 56594 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 56.

The square root of 8666863472 is about 93095.9906333243. The cubic root of 8666863472 is about 2054.0955973593.

The spelling of 8666863472 in words is "eight billion, six hundred sixty-six million, eight hundred sixty-three thousand, four hundred seventy-two".