5540666 has 8 divisors (see below), whose sum is σ = 8748480. Its totient is φ = 2624508.

The previous prime is 5540659. The next prime is 5540683. The reversal of 5540666 is 6660455.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72866 + ... + 72941.

It is an arithmetic number, because the mean of its divisors is an integer number (1093560).

Almost surely, 2^5540666 is an apocalyptic number.

5540666 is a deficient number, since it is larger than the sum of its proper divisors (3207814).

5540666 is a wasteful number, since it uses less digits than its factorization.

5540666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145828.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 5540666 is about 2353.8619330793. The cubic root of 5540666 is about 176.9513948274.

The spelling of 5540666 in words is "five million, five hundred forty thousand, six hundred sixty-six".