543638 has 8 divisors (see below), whose sum is σ = 827832. Its totient is φ = 267696.

The previous prime is 543637. The next prime is 543659. The reversal of 543638 is 836345.

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 543638.

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 543638.

It is not an unprimeable number, because it can be changed into a prime (543637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1895 + ... + 2162.

It is an arithmetic number, because the mean of its divisors is an integer number (103479).

2⁵⁴³⁶³⁸ is an apocalyptic number.

543638 is a deficient number, since it is larger than the sum of its proper divisors (284194).

543638 is a wasteful number, since it uses less digits than its factorization.

543638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126.

The product of its digits is 8640, while the sum is 29.

The square root of 543638 is about 737.3181131642. The cubic root of 543638 is about 81.6149906779.

The spelling of 543638 in words is "five hundred forty-three thousand, six hundred thirty-eight".