5666886665 has 16 divisors (see below), whose sum is σ = 7674281280. Its totient is φ = 3979254720.

The previous prime is 5666886661. The next prime is 5666886677.

5666886665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5666886665 - 2² = 5666886661 is a prime.

It is a super-2 number, since 2×5666886665² = 64227208947909644450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5666886598 and 5666886607.

It is not an unprimeable number, because it can be changed into a prime (5666886661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1774859 + ... + 1778048.

It is an arithmetic number, because the mean of its divisors is an integer number (479642580).

Almost surely, 2^5666886665 is an apocalyptic number.

5666886665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5666886665 is a deficient number, since it is larger than the sum of its proper divisors (2007394615).

5666886665 is a wasteful number, since it uses less digits than its factorization.

5666886665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552952.

The product of its digits is 74649600, while the sum is 62.

The square root of 5666886665 is about 75278.7265102167. The cubic root of 5666886665 is about 1782.8501518196.

The spelling of 5666886665 in words is "five billion, six hundred sixty-six million, eight hundred eighty-six thousand, six hundred sixty-five".