240245569 has 4 divisors (see below), whose sum is σ = 242624340. Its totient is φ = 237866800.

The previous prime is 240245563. The next prime is 240245573. The reversal of 240245569 is 965542042.

240245569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 233020225 + 7225344 = 15265^2 + 2688^2 .

It is a cyclic number.

It is not a de Polignac number, because 240245569 - 2²⁵ = 206691137 is a prime.

It is a super-2 number, since 2×240245569² = 115435866848267522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240245563) 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, 1189234 + ... + 1189435.

It is an arithmetic number, because the mean of its divisors is an integer number (60656085).

Almost surely, 2^240245569 is an apocalyptic number.

It is an amenable number.

240245569 is a deficient number, since it is larger than the sum of its proper divisors (2378771).

240245569 is a wasteful number, since it uses less digits than its factorization.

240245569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378770.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 240245569 is about 15499.8570638571. The cubic root of 240245569 is about 621.6583844904.

The spelling of 240245569 in words is "two hundred forty million, two hundred forty-five thousand, five hundred sixty-nine".