3667885 has 16 divisors (see below), whose sum is σ = 4811184. Its totient is φ = 2668032.

The previous prime is 3667871. The next prime is 3667897. The reversal of 3667885 is 5887663.

It can be written as a sum of positive squares in 8 ways, for example, as 835396 + 2832489 = 914^2 + 1683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3667885 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 6⁴ + 6⁸ + 7³ + 8 + 8⁵ + 5⁹ .

It is a Duffinian number.

Its product of digits (241920) is a multiple of the sum of its prime divisors (864).

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 15 ways as a sum of consecutive naturals, for example, 4359 + ... + 5131.

It is an arithmetic number, because the mean of its divisors is an integer number (300699).

Almost surely, 2^3667885 is an apocalyptic number.

It is an amenable number.

3667885 is a deficient number, since it is larger than the sum of its proper divisors (1143299).

3667885 is a wasteful number, since it uses less digits than its factorization.

3667885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its digits is 241920, while the sum is 43.

The square root of 3667885 is about 1915.1723160071. The cubic root of 3667885 is about 154.2192441397.

It can be divided in two parts, 36678 and 85, that added together give a palindrome (36763).

The spelling of 3667885 in words is "three million, six hundred sixty-seven thousand, eight hundred eighty-five".