5664040665 has 16 divisors (see below), whose sum is σ = 9063434688. Its totient is φ = 3020498496.

The previous prime is 5664040661. The next prime is 5664040687. The reversal of 5664040665 is 5660404665.

It is a happy number.

It is not a de Polignac number, because 5664040665 - 2² = 5664040661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5664040661) by changing a digit.

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, 207387 + ... + 233103.

It is an arithmetic number, because the mean of its divisors is an integer number (566464668).

Almost surely, 2^5664040665 is an apocalyptic number.

It is an amenable number.

5664040665 is a deficient number, since it is larger than the sum of its proper divisors (3399394023).

5664040665 is a wasteful number, since it uses less digits than its factorization.

5664040665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40408.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 5664040665 is about 75259.8210534678. The cubic root of 5664040665 is about 1782.5516433392.

The spelling of 5664040665 in words is "five billion, six hundred sixty-four million, forty thousand, six hundred sixty-five".