553686 has 16 divisors (see below), whose sum is σ = 1265664. Its totient is φ = 158184.

The previous prime is 553681. The next prime is 553687. The reversal of 553686 is 686355.

553686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 553686.

It is not an unprimeable number, because it can be changed into a prime (553681) by changing a digit.

553686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6550 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (79104).

2⁵⁵³⁶⁸⁶ is an apocalyptic number.

553686 is an abundant number, since it is smaller than the sum of its proper divisors (711978).

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

553686 is a wasteful number, since it uses less digits than its factorization.

553686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13195.

The product of its digits is 21600, while the sum is 33.

The square root of 553686 is about 744.1007996233. The cubic root of 553686 is about 82.1147511009.

It can be divided in two parts, 55 and 3686, that added together give a triangular number (3741 = T₈₆).

The spelling of 553686 in words is "five hundred fifty-three thousand, six hundred eighty-six".