550615664 has 20 divisors (see below), whose sum is σ = 1067490456. Its totient is φ = 275134272.

The previous prime is 550615661. The next prime is 550615679. The reversal of 550615664 is 466516055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550615661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17582 + ... + 37554.

Almost surely, 2^550615664 is an apocalyptic number.

It is an amenable number.

550615664 is a deficient number, since it is larger than the sum of its proper divisors (516874792).

550615664 is a wasteful number, since it uses less digits than its factorization.

550615664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21704 (or 21698 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 550615664 is about 23465.2011284796. The cubic root of 550615664 is about 819.6268696983.

The spelling of 550615664 in words is "five hundred fifty million, six hundred fifteen thousand, six hundred sixty-four".