8888666655 has 24 divisors (see below), whose sum is σ = 15632302896. Its totient is φ = 4309655680.

The previous prime is 8888666639. The next prime is 8888666693. The reversal of 8888666655 is 5566668888.

It is not a de Polignac number, because 8888666655 - 2⁴ = 8888666639 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2446854 + ... + 2450483.

It is an arithmetic number, because the mean of its divisors is an integer number (651345954).

Almost surely, 2^8888666655 is an apocalyptic number.

8888666655 is a deficient number, since it is larger than the sum of its proper divisors (6743636241).

8888666655 is a wasteful number, since it uses less digits than its factorization.

8888666655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4897367 (or 4897356 counting only the distinct ones).

The product of its digits is 132710400, while the sum is 66.

The square root of 8888666655 is about 94279.7255776660. The cubic root of 8888666655 is about 2071.4710738496.

The spelling of 8888666655 in words is "eight billion, eight hundred eighty-eight million, six hundred sixty-six thousand, six hundred fifty-five".