243325663 has 4 divisors (see below), whose sum is σ = 278086480. Its totient is φ = 208564848.

The previous prime is 243325657. The next prime is 243325669. The reversal of 243325663 is 366523342.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (243325657) and next prime (243325669).

It is a cyclic number.

It is not a de Polignac number, because 243325663 - 2⁹ = 243325151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243325669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17380398 + ... + 17380411.

It is an arithmetic number, because the mean of its divisors is an integer number (69521620).

Almost surely, 2^243325663 is an apocalyptic number.

243325663 is a deficient number, since it is larger than the sum of its proper divisors (34760817).

243325663 is an equidigital number, since it uses as much as digits as its factorization.

243325663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34760816.

The product of its digits is 77760, while the sum is 34.

The square root of 243325663 is about 15598.8994163050. The cubic root of 243325663 is about 624.3037905157.

The spelling of 243325663 in words is "two hundred forty-three million, three hundred twenty-five thousand, six hundred sixty-three".