243769564 has 6 divisors (see below), whose sum is σ = 426596744. Its totient is φ = 121884780.

The previous prime is 243769549. The next prime is 243769567. The reversal of 243769564 is 465967342.

243769564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243769567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30471192 + ... + 30471199.

Almost surely, 2^243769564 is an apocalyptic number.

It is an amenable number.

243769564 is a deficient number, since it is larger than the sum of its proper divisors (182827180).

243769564 is a wasteful number, since it uses less digits than its factorization.

243769564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60942395 (or 60942393 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 46.

The square root of 243769564 is about 15613.1215328646. The cubic root of 243769564 is about 624.6832007283.

The spelling of 243769564 in words is "two hundred forty-three million, seven hundred sixty-nine thousand, five hundred sixty-four".