550563664 has 40 divisors (see below), whose sum is σ = 1235823680. Its totient is φ = 232720128.

The previous prime is 550563661. The next prime is 550563679. The reversal of 550563664 is 466365055.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550563661) 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 7 ways as a sum of consecutive naturals, for example, 25494 + ... + 41845.

It is an arithmetic number, because the mean of its divisors is an integer number (30895592).

Almost surely, 2^550563664 is an apocalyptic number.

It is an amenable number.

550563664 is an abundant number, since it is smaller than the sum of its proper divisors (685260016).

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

550563664 is a wasteful number, since it uses less digits than its factorization.

550563664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67427 (or 67421 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The square root of 550563664 is about 23464.0930785743. The cubic root of 550563664 is about 819.6010671033.

It can be divided in two parts, 5505 and 63664, that added together give a square (69169 = 263²).

The spelling of 550563664 in words is "five hundred fifty million, five hundred sixty-three thousand, six hundred sixty-four".