243679636 has 12 divisors (see below), whose sum is σ = 448883680. Its totient is φ = 115427160.

The previous prime is 243679627. The next prime is 243679643. The reversal of 243679636 is 636976342.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1603080 + ... + 1603231.

Almost surely, 2^243679636 is an apocalyptic number.

It is an amenable number.

243679636 is a deficient number, since it is larger than the sum of its proper divisors (205204044).

243679636 is a wasteful number, since it uses less digits than its factorization.

243679636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206334 (or 3206332 counting only the distinct ones).

The product of its digits is 979776, while the sum is 46.

The square root of 243679636 is about 15610.2413818621. The cubic root of 243679636 is about 624.6063748669.

The spelling of 243679636 in words is "two hundred forty-three million, six hundred seventy-nine thousand, six hundred thirty-six".