543660 has 96 divisors (see below), whose sum is σ = 1778112. Its totient is φ = 122880.

The previous prime is 543659. The next prime is 543661. The reversal of 543660 is 66345.

It is an interprime number because it is at equal distance from previous prime (543659) and next prime (543661).

It is a self number, because there is not a number n which added to its sum of digits gives 543660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13240 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (18522).

2⁵⁴³⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889056).

543660 is an abundant number, since it is smaller than the sum of its proper divisors (1234452).

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

543660 is a wasteful number, since it uses less digits than its factorization.

543660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 543660 is about 737.3330319469. Note that the first 3 decimals coincide. The cubic root of 543660 is about 81.6160915978.

The spelling of 543660 in words is "five hundred forty-three thousand, six hundred sixty".