3665779 has 12 divisors (see below), whose sum is σ = 4026000. Its totient is φ = 3335904.

The previous prime is 3665777. The next prime is 3665791. The reversal of 3665779 is 9775663.

It is not a de Polignac number, because 3665779 - 2¹ = 3665777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3665777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18322 + ... + 18520.

It is an arithmetic number, because the mean of its divisors is an integer number (335500).

Almost surely, 2^3665779 is an apocalyptic number.

3665779 is a deficient number, since it is larger than the sum of its proper divisors (360221).

3665779 is a wasteful number, since it uses less digits than its factorization.

3665779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 321 counting only the distinct ones).

The product of its digits is 238140, while the sum is 43.

The square root of 3665779 is about 1914.6224170838. The cubic root of 3665779 is about 154.1897223209.

It can be divided in two parts, 3665 and 779, that added together give a palindrome (4444).

The spelling of 3665779 in words is "three million, six hundred sixty-five thousand, seven hundred seventy-nine".