5666105665 has 32 divisors (see below), whose sum is σ = 7523176320. Its totient is φ = 4062489600.

The previous prime is 5666105663. The next prime is 5666105671. The reversal of 5666105665 is 5665016665.

It is not a de Polignac number, because 5666105665 - 2¹ = 5666105663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5666105663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1128681 + ... + 1133689.

It is an arithmetic number, because the mean of its divisors is an integer number (235099260).

Almost surely, 2^5666105665 is an apocalyptic number.

5666105665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5666105665 is a deficient number, since it is larger than the sum of its proper divisors (1857070655).

5666105665 is a wasteful number, since it uses less digits than its factorization.

5666105665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313.

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 5666105665 is about 75273.5389429778. The cubic root of 5666105665 is about 1782.7682450031.

It can be divided in two parts, 566610 and 5665, that added together give a palindrome (572275).

The spelling of 5666105665 in words is "five billion, six hundred sixty-six million, one hundred five thousand, six hundred sixty-five".