3840565 has 8 divisors (see below), whose sum is σ = 4851360. Its totient is φ = 2910672.

The previous prime is 3840547. The next prime is 3840601. The reversal of 3840565 is 5650483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3840565 - 2⁵ = 3840533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20119 + ... + 20308.

It is an arithmetic number, because the mean of its divisors is an integer number (606420).

Almost surely, 2^3840565 is an apocalyptic number.

It is an amenable number.

3840565 is a deficient number, since it is larger than the sum of its proper divisors (1010795).

3840565 is a wasteful number, since it uses less digits than its factorization.

3840565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40451.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 3840565 is about 1959.7359516016. The cubic root of 3840565 is about 156.6023854792.

The spelling of 3840565 in words is "three million, eight hundred forty thousand, five hundred sixty-five".