3660309 has 14 divisors (see below), whose sum is σ = 5489046. Its totient is φ = 2439720.

The previous prime is 3660281. The next prime is 3660317. The reversal of 3660309 is 9030663.

It can be written as a sum of positive squares in only one way, i.e., 3572100 + 88209 = 1890^2 + 297^2 .

It is not a de Polignac number, because 3660309 - 2⁸ = 3660053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3660359) 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 13 ways as a sum of consecutive naturals, for example, 1782 + ... + 3239.

Almost surely, 2^3660309 is an apocalyptic number.

It is an amenable number.

3660309 is a deficient number, since it is larger than the sum of its proper divisors (1828737).

3660309 is an frugal number, since it uses more digits than its factorization.

3660309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039 (or 5024 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 3660309 is about 1913.1934037101. The cubic root of 3660309 is about 154.1129912323.

It can be divided in two parts, 3660 and 309, that added together give a square (3969 = 63²).

The spelling of 3660309 in words is "three million, six hundred sixty thousand, three hundred nine".