3664664665 has 16 divisors (see below), whose sum is σ = 4507042176. Its totient is φ = 2858838400.

The previous prime is 3664664651. The next prime is 3664664711. The reversal of 3664664665 is 5664664663.

It is not a de Polignac number, because 3664664665 - 2⁹ = 3664664153 is a prime.

It is a Duffinian 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, 688404 + ... + 693706.

It is an arithmetic number, because the mean of its divisors is an integer number (281690136).

Almost surely, 2^3664664665 is an apocalyptic number.

It is an amenable number.

3664664665 is a deficient number, since it is larger than the sum of its proper divisors (842377511).

3664664665 is a wasteful number, since it uses less digits than its factorization.

3664664665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720.

The product of its digits is 11197440, while the sum is 52.

The square root of 3664664665 is about 60536.4738401569. The cubic root of 3664664665 is about 1541.7409704565.

The spelling of 3664664665 in words is "three billion, six hundred sixty-four million, six hundred sixty-four thousand, six hundred sixty-five".