4240665 has 48 divisors (see below), whose sum is σ = 8648640. Its totient is φ = 1895040.

The previous prime is 4240661. The next prime is 4240673. The reversal of 4240665 is 5660424.

It is a happy number.

It is not a de Polignac number, because 4240665 - 2² = 4240661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4240661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6106 + ... + 6764.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

Almost surely, 2^4240665 is an apocalyptic number.

4240665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4240665 is an abundant number, since it is smaller than the sum of its proper divisors (4407975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4240665 is a wasteful number, since it uses less digits than its factorization.

4240665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 4240665 is about 2059.2874981410. The cubic root of 4240665 is about 161.8619079268.

The spelling of 4240665 in words is "four million, two hundred forty thousand, six hundred sixty-five".