3664005 has 16 divisors (see below), whose sum is σ = 6065280. Its totient is φ = 1886528.

The previous prime is 3663971. The next prime is 3664013. The reversal of 3664005 is 5004663.

It is a cyclic number.

It is not a de Polignac number, because 3664005 - 2⁸ = 3663749 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3777 + ... + 4646.

It is an arithmetic number, because the mean of its divisors is an integer number (379080).

Almost surely, 2^3664005 is an apocalyptic number.

It is an amenable number.

3664005 is a deficient number, since it is larger than the sum of its proper divisors (2401275).

3664005 is a wasteful number, since it uses less digits than its factorization.

3664005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 3664005 is about 1914.1590842979. The cubic root of 3664005 is about 154.1648456891.

Adding to 3664005 its reverse (5004663), we get a palindrome (8668668).

It can be divided in two parts, 366 and 4005, that added together give a triangular number (4371 = T₉₃).

The spelling of 3664005 in words is "three million, six hundred sixty-four thousand, five".