3665111 has 4 divisors (see below), whose sum is σ = 3715392. Its totient is φ = 3614832.

The previous prime is 3665089. The next prime is 3665117. The reversal of 3665111 is 1115663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1115663 = 467 ⋅2389.

It is a cyclic number.

It is not a de Polignac number, because 3665111 - 2¹⁸ = 3402967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25031 + ... + 25176.

It is an arithmetic number, because the mean of its divisors is an integer number (928848).

Almost surely, 2^3665111 is an apocalyptic number.

3665111 is a deficient number, since it is larger than the sum of its proper divisors (50281).

3665111 is an equidigital number, since it uses as much as digits as its factorization.

3665111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50280.

The product of its digits is 540, while the sum is 23.

The square root of 3665111 is about 1914.4479622074. The cubic root of 3665111 is about 154.1803559632.

The spelling of 3665111 in words is "three million, six hundred sixty-five thousand, one hundred eleven".