3665173 has 4 divisors (see below), whose sum is σ = 3669228. Its totient is φ = 3661120.

The previous prime is 3665171. The next prime is 3665177. The reversal of 3665173 is 3715663.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 2630884 = 1017^2 + 1622^2 .

It is a cyclic number.

It is not a de Polignac number, because 3665173 - 2¹ = 3665171 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 3 + 6² + 6² + 5⁹ + 1 + 7⁶ + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665171) 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, 15 + ... + 2707.

It is an arithmetic number, because the mean of its divisors is an integer number (917307).

Almost surely, 2^3665173 is an apocalyptic number.

It is an amenable number.

3665173 is a deficient number, since it is larger than the sum of its proper divisors (4055).

3665173 is a wasteful number, since it uses less digits than its factorization.

3665173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054.

The product of its digits is 11340, while the sum is 31.

The square root of 3665173 is about 1914.4641547963. The cubic root of 3665173 is about 154.1812253437.

The spelling of 3665173 in words is "three million, six hundred sixty-five thousand, one hundred seventy-three".