3845665 has 8 divisors (see below), whose sum is σ = 4636008. Its totient is φ = 3062400.

The previous prime is 3845663. The next prime is 3845693. The reversal of 3845665 is 5665483.

3845665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 144 + 3845521 = 12^2 + 1961^2 .

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

It is not a de Polignac number, because 3845665 - 2¹ = 3845663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3845663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486 + ... + 2815.

It is an arithmetic number, because the mean of its divisors is an integer number (579501).

Almost surely, 2^3845665 is an apocalyptic number.

It is an amenable number.

3845665 is a deficient number, since it is larger than the sum of its proper divisors (790343).

3845665 is a wasteful number, since it uses less digits than its factorization.

3845665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539.

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

The square root of 3845665 is about 1961.0367156175. The cubic root of 3845665 is about 156.6716738000.

The spelling of 3845665 in words is "three million, eight hundred forty-five thousand, six hundred sixty-five".