543668564 has 12 divisors (see below), whose sum is σ = 951639444. Its totient is φ = 271771584.

The previous prime is 543668501. The next prime is 543668581. The reversal of 543668564 is 465866345.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 149328400 + 394340164 = 12220^2 + 19858^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7712 + ... + 33864.

It is an arithmetic number, because the mean of its divisors is an integer number (79303287).

Almost surely, 2^543668564 is an apocalyptic number.

It is an amenable number.

543668564 is a deficient number, since it is larger than the sum of its proper divisors (407970880).

543668564 is a wasteful number, since it uses less digits than its factorization.

543668564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31354 (or 31352 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 47.

The square root of 543668564 is about 23316.7013962095. The cubic root of 543668564 is about 816.1652014779.

The spelling of 543668564 in words is "five hundred forty-three million, six hundred sixty-eight thousand, five hundred sixty-four".