553986 has 16 divisors (see below), whose sum is σ = 1231200. Its totient is φ = 184644.

The previous prime is 553981. The next prime is 553991. The reversal of 553986 is 689355.

It is an interprime number because it is at equal distance from previous prime (553981) and next prime (553991).

It is a self number, because there is not a number n which added to its sum of digits gives 553986.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 553986.

It is not an unprimeable number, because it can be changed into a prime (553981) by changing a digit.

553986 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, 5076 + ... + 5183.

It is an arithmetic number, because the mean of its divisors is an integer number (76950).

2⁵⁵³⁹⁸⁶ is an apocalyptic number.

553986 is an abundant number, since it is smaller than the sum of its proper divisors (677214).

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

553986 is a wasteful number, since it uses less digits than its factorization.

553986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10270 (or 10264 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 553986 is about 744.3023579165. The cubic root of 553986 is about 82.1295789862.

It can be divided in two parts, 5539 and 86, that added together give a square (5625 = 75²).

The spelling of 553986 in words is "five hundred fifty-three thousand, nine hundred eighty-six".