4066765 has 8 divisors (see below), whose sum is σ = 4929048. Its totient is φ = 3220800.

The previous prime is 4066759. The next prime is 4066789. The reversal of 4066765 is 5676604.

It can be written as a sum of positive squares in 4 ways, for example, as 1929321 + 2137444 = 1389^2 + 1462^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-4066765 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4066765.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (616131).

Almost surely, 2^4066765 is an apocalyptic number.

It is an amenable number.

4066765 is a deficient number, since it is larger than the sum of its proper divisors (862283).

4066765 is a wasteful number, since it uses less digits than its factorization.

4066765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8159.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 4066765 is about 2016.6221758178. The cubic root of 4066765 is about 159.6184266721.

The spelling of 4066765 in words is "four million, sixty-six thousand, seven hundred sixty-five".