549738664 has 16 divisors (see below), whose sum is σ = 1033823700. Its totient is φ = 274052352.

The previous prime is 549738661. The next prime is 549738689. The reversal of 549738664 is 466837945.

It can be written as a sum of positive squares in 2 ways, for example, as 540190564 + 9548100 = 23242^2 + 3090^2 .

It is not an unprimeable number, because it can be changed into a prime (549738661) 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, 99259 + ... + 104650.

Almost surely, 2^549738664 is an apocalyptic number.

It is an amenable number.

549738664 is a deficient number, since it is larger than the sum of its proper divisors (484085036).

549738664 is a wasteful number, since it uses less digits than its factorization.

549738664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204252 (or 204248 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The square root of 549738664 is about 23446.5064348615. The cubic root of 549738664 is about 819.1914814699.

The spelling of 549738664 in words is "five hundred forty-nine million, seven hundred thirty-eight thousand, six hundred sixty-four".