5538666 has 24 divisors (see below), whose sum is σ = 12886560. Its totient is φ = 1582392.

The previous prime is 5538661. The next prime is 5538667. The reversal of 5538666 is 6668355.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5538661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9126 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (536940).

Almost surely, 2^5538666 is an apocalyptic number.

5538666 is an abundant number, since it is smaller than the sum of its proper divisors (7347894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5538666 is a wasteful number, since it uses less digits than its factorization.

5538666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18858 (or 18851 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 5538666 is about 2353.4370609812. The cubic root of 5538666 is about 176.9301010347.

The spelling of 5538666 in words is "five million, five hundred thirty-eight thousand, six hundred sixty-six".