5005666 has 4 divisors (see below), whose sum is σ = 7508502. Its totient is φ = 2502832.

The previous prime is 5005643. The next prime is 5005669. The reversal of 5005666 is 6665005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4862025 + 143641 = 2205^2 + 379^2 .

It is not an unprimeable number, because it can be changed into a prime (5005669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251415 + ... + 1251418.

Almost surely, 2^5005666 is an apocalyptic number.

5005666 is a deficient number, since it is larger than the sum of its proper divisors (2502836).

5005666 is a wasteful number, since it uses less digits than its factorization.

5005666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502835.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 5005666 is about 2237.3345748904. The cubic root of 5005666 is about 171.0621617761.

It can be divided in two parts, 5005 and 666, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 5005666 in words is "five million, five thousand, six hundred sixty-six".