550665687 has 16 divisors (see below), whose sum is σ = 862581888. Its totient is φ = 308064480.

The previous prime is 550665673. The next prime is 550665691. The reversal of 550665687 is 786566055.

It is not a de Polignac number, because 550665687 - 2⁶ = 550665623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550665607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641373 + ... + 642230.

It is an arithmetic number, because the mean of its divisors is an integer number (53911368).

Almost surely, 2^550665687 is an apocalyptic number.

550665687 is a deficient number, since it is larger than the sum of its proper divisors (311916201).

550665687 is a wasteful number, since it uses less digits than its factorization.

550665687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283630.

The product of its (nonzero) digits is 1512000, while the sum is 48.

The square root of 550665687 is about 23466.2670018050. The cubic root of 550665687 is about 819.6516897655.

The spelling of 550665687 in words is "five hundred fifty million, six hundred sixty-five thousand, six hundred eighty-seven".