240730565 has 4 divisors (see below), whose sum is σ = 288876684. Its totient is φ = 192584448.

The previous prime is 240730519. The next prime is 240730601. The reversal of 240730565 is 565037042.

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

It can be written as a sum of positive squares in 2 ways, for example, as 107143201 + 133587364 = 10351^2 + 11558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240730565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24073052 + ... + 24073061.

It is an arithmetic number, because the mean of its divisors is an integer number (72219171).

Almost surely, 2^240730565 is an apocalyptic number.

It is an amenable number.

240730565 is a deficient number, since it is larger than the sum of its proper divisors (48146119).

240730565 is an equidigital number, since it uses as much as digits as its factorization.

240730565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48146118.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 240730565 is about 15515.4943524207. The cubic root of 240730565 is about 622.0764278180.

The spelling of 240730565 in words is "two hundred forty million, seven hundred thirty thousand, five hundred sixty-five".