543645864 has 64 divisors (see below), whose sum is σ = 1531440000. Its totient is φ = 178657920.

The previous prime is 543645863. The next prime is 543645881. The reversal of 543645864 is 468546345.

543645864 is a `hidden beast` number, since 5 + 4 + 3 + 64 + 586 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (543645863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2389 + ... + 33060.

It is an arithmetic number, because the mean of its divisors is an integer number (23928750).

Almost surely, 2^543645864 is an apocalyptic number.

543645864 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543645864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765720000).

543645864 is an abundant number, since it is smaller than the sum of its proper divisors (987794136).

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

543645864 is a wasteful number, since it uses less digits than its factorization.

543645864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35535 (or 35525 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The square root of 543645864 is about 23316.2146155846. The cubic root of 543645864 is about 816.1538421013.

The spelling of 543645864 in words is "five hundred forty-three million, six hundred forty-five thousand, eight hundred sixty-four".