549634636 has 12 divisors (see below), whose sum is σ = 963286128. Its totient is φ = 274410032.

The previous prime is 549634597. The next prime is 549634637. The reversal of 549634636 is 636436945.

It is not an unprimeable number, because it can be changed into a prime (549634637) 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, 98776 + ... + 104191.

It is an arithmetic number, because the mean of its divisors is an integer number (80273844).

Almost surely, 2^549634636 is an apocalyptic number.

It is an amenable number.

549634636 is a deficient number, since it is larger than the sum of its proper divisors (413651492).

549634636 is a wasteful number, since it uses less digits than its factorization.

549634636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203648 (or 203646 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 46.

The square root of 549634636 is about 23444.2879183822. The cubic root of 549634636 is about 819.1398058690.

The spelling of 549634636 in words is "five hundred forty-nine million, six hundred thirty-four thousand, six hundred thirty-six".