243687346 has 64 divisors (see below), whose sum is σ = 451215360. Its totient is φ = 96465600.

The previous prime is 243687341. The next prime is 243687347. The reversal of 243687346 is 643786342.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (243687341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1918735 + ... + 1918861.

It is an arithmetic number, because the mean of its divisors is an integer number (7050240).

Almost surely, 2^243687346 is an apocalyptic number.

243687346 is a deficient number, since it is larger than the sum of its proper divisors (207528014).

243687346 is a wasteful number, since it uses less digits than its factorization.

243687346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its digits is 580608, while the sum is 43.

The square root of 243687346 is about 15610.4883331688. The cubic root of 243687346 is about 624.6129622924.

The spelling of 243687346 in words is "two hundred forty-three million, six hundred eighty-seven thousand, three hundred forty-six".