8873478666 has 32 divisors (see below), whose sum is σ = 21235677120. Its totient is φ = 2730300912.

The previous prime is 8873478641. The next prime is 8873478721. The reversal of 8873478666 is 6668743788.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6319440 + ... + 6320843.

It is an arithmetic number, because the mean of its divisors is an integer number (663614910).

Almost surely, 2^8873478666 is an apocalyptic number.

8873478666 is an abundant number, since it is smaller than the sum of its proper divisors (12362198454).

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

8873478666 is a wasteful number, since it uses less digits than its factorization.

8873478666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12640307 (or 12640301 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The square root of 8873478666 is about 94199.1436585280. The cubic root of 8873478666 is about 2070.2905662266.

The spelling of 8873478666 in words is "eight billion, eight hundred seventy-three million, four hundred seventy-eight thousand, six hundred sixty-six".