5666678888 has 16 divisors (see below), whose sum is σ = 11442332580. Its totient is φ = 2615390208.

The previous prime is 5666678869. The next prime is 5666678891. The reversal of 5666678888 is 8888766665.

It can be written as a sum of positive squares in 2 ways, for example, as 4741424164 + 925254724 = 68858^2 + 30418^2 .

It is a super-2 number, since 2×5666678888² = 64222499239409833088, which contains 22 as substring.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27243545 + ... + 27243752.

Almost surely, 2^5666678888 is an apocalyptic number.

It is an amenable number.

5666678888 is an abundant number, since it is smaller than the sum of its proper divisors (5775653692).

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

5666678888 is a wasteful number, since it uses less digits than its factorization.

5666678888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54487316 (or 54487312 counting only the distinct ones).

The product of its digits is 185794560, while the sum is 68.

The square root of 5666678888 is about 75277.3464463247. The cubic root of 5666678888 is about 1782.8283620901.

The spelling of 5666678888 in words is "five billion, six hundred sixty-six million, six hundred seventy-eight thousand, eight hundred eighty-eight".