3663389 has 4 divisors (see below), whose sum is σ = 3670524. Its totient is φ = 3656256.

The previous prime is 3663383. The next prime is 3663419. The reversal of 3663389 is 9833663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2199289 + 1464100 = 1483^2 + 1210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3663389 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663383) 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, 2732 + ... + 3845.

It is an arithmetic number, because the mean of its divisors is an integer number (917631).

Almost surely, 2^3663389 is an apocalyptic number.

It is an amenable number.

3663389 is a deficient number, since it is larger than the sum of its proper divisors (7135).

3663389 is an equidigital number, since it uses as much as digits as its factorization.

3663389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134.

The product of its digits is 69984, while the sum is 38.

The square root of 3663389 is about 1913.9981713680. The cubic root of 3663389 is about 154.1562057020.

Adding to 3663389 its product of digits (69984), we get a palindrome (3733373).

The spelling of 3663389 in words is "three million, six hundred sixty-three thousand, three hundred eighty-nine".