4065745 has 8 divisors (see below), whose sum is σ = 5010984. Its totient is φ = 3164544.

The previous prime is 4065731. The next prime is 4065751. The reversal of 4065745 is 5475604.

It is a happy number.

4065745 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 1048576 + 3017169 = 1024^2 + 1737^2 .

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 4065745 - 2¹³ = 4057553 is a prime.

It is an unprimeable number.

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, 10804 + ... + 11173.

It is an arithmetic number, because the mean of its divisors is an integer number (626373).

Almost surely, 2^4065745 is an apocalyptic number.

It is an amenable number.

4065745 is a deficient number, since it is larger than the sum of its proper divisors (945239).

4065745 is a wasteful number, since it uses less digits than its factorization.

4065745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22019.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 4065745 is about 2016.3692618169. The cubic root of 4065745 is about 159.6050807318.

The spelling of 4065745 in words is "four million, sixty-five thousand, seven hundred forty-five".