240005689 has 16 divisors (see below), whose sum is σ = 308883456. Its totient is φ = 180982800.

The previous prime is 240005657. The next prime is 240005719. The reversal of 240005689 is 986500042.

It is a happy number.

240005689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 240005689 - 2⁵ = 240005657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240005089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47887 + ... + 52660.

It is an arithmetic number, because the mean of its divisors is an integer number (19305216).

Almost surely, 2^240005689 is an apocalyptic number.

It is an amenable number.

240005689 is a deficient number, since it is larger than the sum of its proper divisors (68877767).

240005689 is a wasteful number, since it uses less digits than its factorization.

240005689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100596.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 240005689 is about 15492.1169954271. The cubic root of 240005689 is about 621.4514114425.

The spelling of 240005689 in words is "two hundred forty million, five thousand, six hundred eighty-nine".