549000644 has 12 divisors (see below), whose sum is σ = 961875600. Its totient is φ = 274179048.

The previous prime is 549000637. The next prime is 549000677. The reversal of 549000644 is 446000945.

It is a happy number.

It is a super-2 number, since 2×549000644² = 602803414224829472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 549000644.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76454 + ... + 83325.

It is an arithmetic number, because the mean of its divisors is an integer number (80156300).

Almost surely, 2^549000644 is an apocalyptic number.

It is an amenable number.

549000644 is a deficient number, since it is larger than the sum of its proper divisors (412874956).

549000644 is a wasteful number, since it uses less digits than its factorization.

549000644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160642 (or 160640 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 549000644 is about 23430.7627703410. The cubic root of 549000644 is about 818.8247311777.

The spelling of 549000644 in words is "five hundred forty-nine million, six hundred forty-four", and thus it is an aban number.