543864 has 64 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 161280.

The previous prime is 543859. The next prime is 543871. The reversal of 543864 is 468345.

It is a d-powerful number, because it can be written as 5 + 4⁵ + 8³ + 3⁵ + 6⁷ + 4⁹ .

Its product of digits (11520) is a multiple of the sum of its prime divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12627 + ... + 12669.

It is an arithmetic number, because the mean of its divisors is an integer number (23760).

2⁵⁴³⁸⁶⁴ 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 543864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760320).

543864 is an abundant number, since it is smaller than the sum of its proper divisors (976776).

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

543864 is a wasteful number, since it uses less digits than its factorization.

543864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 96 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 543864 is about 737.4713553759. The cubic root of 543864 is about 81.6262987129.

The spelling of 543864 in words is "five hundred forty-three thousand, eight hundred sixty-four".