549387664 has 40 divisors (see below), whose sum is σ = 1218884288. Its totient is φ = 234990720.

The previous prime is 549387661. The next prime is 549387689. The reversal of 549387664 is 466783945.

It is not an unprimeable number, because it can be changed into a prime (549387661) 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, 56059 + ... + 65125.

Almost surely, 2^549387664 is an apocalyptic number.

It is an amenable number.

549387664 is an abundant number, since it is smaller than the sum of its proper divisors (669496624).

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

549387664 is a wasteful number, since it uses less digits than its factorization.

549387664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9623 (or 9617 counting only the distinct ones).

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

The square root of 549387664 is about 23439.0201160373. The cubic root of 549387664 is about 819.0170971388.

The spelling of 549387664 in words is "five hundred forty-nine million, three hundred eighty-seven thousand, six hundred sixty-four".