3666309 has 16 divisors (see below), whose sum is σ = 5070912. Its totient is φ = 2354688.

The previous prime is 3666301. The next prime is 3666317. The reversal of 3666309 is 9036663.

It is an interprime number because it is at equal distance from previous prime (3666301) and next prime (3666317).

It is not a de Polignac number, because 3666309 - 2³ = 3666301 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3666309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666301) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12367 + ... + 12659.

It is an arithmetic number, because the mean of its divisors is an integer number (316932).

Almost surely, 2^3666309 is an apocalyptic number.

It is an amenable number.

3666309 is a deficient number, since it is larger than the sum of its proper divisors (1404603).

3666309 is a wasteful number, since it uses less digits than its factorization.

3666309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 3666309 is about 1914.7608205726. The cubic root of 3666309 is about 154.1971529029.

The spelling of 3666309 in words is "three million, six hundred sixty-six thousand, three hundred nine".