240889665 has 16 divisors (see below), whose sum is σ = 385754688. Its totient is φ = 128364096.

The previous prime is 240889639. The next prime is 240889687. The reversal of 240889665 is 566988042.

It is a happy number.

It is not a de Polignac number, because 240889665 - 2⁵ = 240889633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12987 + ... + 25503.

It is an arithmetic number, because the mean of its divisors is an integer number (24109668).

Almost surely, 2^240889665 is an apocalyptic number.

It is an amenable number.

240889665 is a deficient number, since it is larger than the sum of its proper divisors (144865023).

240889665 is a wasteful number, since it uses less digits than its factorization.

240889665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13808.

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 240889665 is about 15520.6206383637. The cubic root of 240889665 is about 622.2134420825.

The spelling of 240889665 in words is "two hundred forty million, eight hundred eighty-nine thousand, six hundred sixty-five".