243734897 has 8 divisors (see below), whose sum is σ = 279024000. Its totient is φ = 208563264.

The previous prime is 243734867. The next prime is 243734921. The reversal of 243734897 is 798437342.

243734897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-243734897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243734837) 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, 24872 + ... + 33257.

It is an arithmetic number, because the mean of its divisors is an integer number (34878000).

Almost surely, 2^243734897 is an apocalyptic number.

It is an amenable number.

243734897 is a deficient number, since it is larger than the sum of its proper divisors (35289103).

243734897 is an equidigital number, since it uses as much as digits as its factorization.

243734897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58735.

The product of its digits is 1016064, while the sum is 47.

The square root of 243734897 is about 15612.0113054020. The cubic root of 243734897 is about 624.6535868054.

The spelling of 243734897 in words is "two hundred forty-three million, seven hundred thirty-four thousand, eight hundred ninety-seven".