240990565 has 12 divisors (see below), whose sum is σ = 294029892. Its totient is φ = 189617280.

The previous prime is 240990539. The next prime is 240990577. The reversal of 240990565 is 565099042.

It can be written as a sum of positive squares in 6 ways, for example, as 150626529 + 90364036 = 12273^2 + 9506^2 .

It is not a de Polignac number, because 240990565 - 2²⁵ = 207436133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12129 + ... + 25081.

It is an arithmetic number, because the mean of its divisors is an integer number (24502491).

Almost surely, 2^240990565 is an apocalyptic number.

It is an amenable number.

240990565 is a deficient number, since it is larger than the sum of its proper divisors (53039327).

240990565 is an equidigital number, since it uses as much as digits as its factorization.

240990565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13080 (or 13019 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 240990565 is about 15523.8708123973. The cubic root of 240990565 is about 622.3003042188.

The spelling of 240990565 in words is "two hundred forty million, nine hundred ninety thousand, five hundred sixty-five".