550685 has 8 divisors (see below), whose sum is σ = 665016. Its totient is φ = 437760.

The previous prime is 550679. The next prime is 550691. The reversal of 550685 is 586055.

550685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (550679) and next prime (550691).

It can be written as a sum of positive squares in 4 ways, for example, as 206116 + 344569 = 454^2 + 587^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 550685 - 2⁶ = 550621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977 + ... + 1433.

It is an arithmetic number, because the mean of its divisors is an integer number (83127).

2⁵⁵⁰⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

550685 is a deficient number, since it is larger than the sum of its proper divisors (114331).

550685 is a wasteful number, since it uses less digits than its factorization.

550685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 550685 is about 742.0815319087. The cubic root of 550685 is about 81.9661271954.

The spelling of 550685 in words is "five hundred fifty thousand, six hundred eighty-five".