243678487 has 8 divisors (see below), whose sum is σ = 263282096. Its totient is φ = 224197632.

The previous prime is 243678451. The next prime is 243678497. The reversal of 243678487 is 784876342.

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

It is a cyclic number.

It is not a de Polignac number, because 243678487 - 2⁷ = 243678359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243678487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243678427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26538 + ... + 34519.

It is an arithmetic number, because the mean of its divisors is an integer number (32910262).

Almost surely, 2^243678487 is an apocalyptic number.

243678487 is a deficient number, since it is larger than the sum of its proper divisors (19603609).

243678487 is a wasteful number, since it uses less digits than its factorization.

243678487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61377.

The product of its digits is 1806336, while the sum is 49.

The square root of 243678487 is about 15610.2045790566. The cubic root of 243678487 is about 624.6053931491.

The spelling of 243678487 in words is "two hundred forty-three million, six hundred seventy-eight thousand, four hundred eighty-seven".