553638 has 16 divisors (see below), whose sum is σ = 1128816. Its totient is φ = 180960.

The previous prime is 553627. The next prime is 553643. The reversal of 553638 is 836355.

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 553638.

It is an unprimeable number.

553638 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, 553 + ... + 1188.

It is an arithmetic number, because the mean of its divisors is an integer number (70551).

2⁵⁵³⁶³⁸ is an apocalyptic number.

553638 is an abundant number, since it is smaller than the sum of its proper divisors (575178).

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

553638 is a wasteful number, since it uses less digits than its factorization.

553638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799.

The product of its digits is 10800, while the sum is 30.

The square root of 553638 is about 744.0685452295. The cubic root of 553638 is about 82.1123781422.

The spelling of 553638 in words is "five hundred fifty-three thousand, six hundred thirty-eight".