3666925 has 6 divisors (see below), whose sum is σ = 4547018. Its totient is φ = 2933520.

The previous prime is 3666919. The next prime is 3666947. The reversal of 3666925 is 5296663.

It can be written as a sum of positive squares in 3 ways, for example, as 30276 + 3636649 = 174^2 + 1907^2 .

It is not a de Polignac number, because 3666925 - 2⁷ = 3666797 is a prime.

It is a d-powerful number, because it can be written as 3 + 6² + 6⁴ + 6⁸ + 9² + 2¹⁵ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 73314 + ... + 73363.

Almost surely, 2^3666925 is an apocalyptic number.

It is an amenable number.

3666925 is a deficient number, since it is larger than the sum of its proper divisors (880093).

3666925 is a wasteful number, since it uses less digits than its factorization.

3666925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146687 (or 146682 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The square root of 3666925 is about 1914.9216694163. The cubic root of 3666925 is about 154.2057883022.

The spelling of 3666925 in words is "three million, six hundred sixty-six thousand, nine hundred twenty-five".