549746666 has 16 divisors (see below), whose sum is σ = 967894656. Its totient is φ = 229237776.

The previous prime is 549746651. The next prime is 549746669. The reversal of 549746666 is 666647945.

It is a happy number.

549746666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (549746669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530126 + ... + 531161.

It is an arithmetic number, because the mean of its divisors is an integer number (60493416).

Almost surely, 2^549746666 is an apocalyptic number.

549746666 is a deficient number, since it is larger than the sum of its proper divisors (418147990).

549746666 is a wasteful number, since it uses less digits than its factorization.

549746666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061333.

The product of its digits is 6531840, while the sum is 53.

The square root of 549746666 is about 23446.6770779998. The cubic root of 549746666 is about 819.1954561697.

The spelling of 549746666 in words is "five hundred forty-nine million, seven hundred forty-six thousand, six hundred sixty-six".