243545684 has 6 divisors (see below), whose sum is σ = 426204954. Its totient is φ = 121772840.

The previous prime is 243545669. The next prime is 243545707. The reversal of 243545684 is 486545342.

It can be written as a sum of positive squares in only one way, i.e., 238023184 + 5522500 = 15428^2 + 2350^2 .

It is a super-3 number, since 3×243545684³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30443207 + ... + 30443214.

It is an arithmetic number, because the mean of its divisors is an integer number (71034159).

Almost surely, 2^243545684 is an apocalyptic number.

It is an amenable number.

243545684 is a deficient number, since it is larger than the sum of its proper divisors (182659270).

243545684 is a wasteful number, since it uses less digits than its factorization.

243545684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60886425 (or 60886423 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

The square root of 243545684 is about 15605.9502754558. The cubic root of 243545684 is about 624.4919040669.

The spelling of 243545684 in words is "two hundred forty-three million, five hundred forty-five thousand, six hundred eighty-four".