243545685 has 8 divisors (see below), whose sum is σ = 389673120. Its totient is φ = 129891024.

The previous prime is 243545669. The next prime is 243545707. The reversal of 243545685 is 586545342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243545685 - 2⁴ = 243545669 is a prime.

It is a super-3 number, since 3×243545685³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8118175 + ... + 8118204.

It is an arithmetic number, because the mean of its divisors is an integer number (48709140).

Almost surely, 2^243545685 is an apocalyptic number.

It is an amenable number.

243545685 is a deficient number, since it is larger than the sum of its proper divisors (146127435).

243545685 is a wasteful number, since it uses less digits than its factorization.

243545685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16236387.

The product of its digits is 576000, while the sum is 42.

The square root of 243545685 is about 15605.9503074949. The cubic root of 243545685 is about 624.4919049216.

The spelling of 243545685 in words is "two hundred forty-three million, five hundred forty-five thousand, six hundred eighty-five".