5666023666 has 8 divisors (see below), whose sum is σ = 8500078044. Its totient is φ = 2832664320.

The previous prime is 5666023661. The next prime is 5666023673. The reversal of 5666023666 is 6663206665.

It can be written as a sum of positive squares in 2 ways, for example, as 4785180625 + 880843041 = 69175^2 + 29679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5666023661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152875 + ... + 186286.

Almost surely, 2^5666023666 is an apocalyptic number.

5666023666 is a deficient number, since it is larger than the sum of its proper divisors (2834054378).

5666023666 is a wasteful number, since it uses less digits than its factorization.

5666023666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347516.

The product of its (nonzero) digits is 1399680, while the sum is 46.

The square root of 5666023666 is about 75272.9942675326. The cubic root of 5666023666 is about 1782.7596449800.

The spelling of 5666023666 in words is "five billion, six hundred sixty-six million, twenty-three thousand, six hundred sixty-six".