4445665 has 16 divisors (see below), whose sum is σ = 6186240. Its totient is φ = 3003840.

The previous prime is 4445663. The next prime is 4445681. The reversal of 4445665 is 5665444.

4445665 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 4445665 - 2¹ = 4445663 is a prime.

4445665 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4445665.

It is not an unprimeable number, because it can be changed into a prime (4445663) 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, 1591 + ... + 3379.

It is an arithmetic number, because the mean of its divisors is an integer number (386640).

Almost surely, 2^4445665 is an apocalyptic number.

It is an amenable number.

4445665 is a deficient number, since it is larger than the sum of its proper divisors (1740575).

4445665 is a wasteful number, since it uses less digits than its factorization.

4445665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872.

The product of its digits is 57600, while the sum is 34.

The square root of 4445665 is about 2108.4745670745. The cubic root of 4445665 is about 164.4291876554.

It can be divided in two parts, 44456 and 65, that added together give a square (44521 = 211²).

The spelling of 4445665 in words is "four million, four hundred forty-five thousand, six hundred sixty-five".