5644423065 has 32 divisors (see below), whose sum is σ = 9101664000. Its totient is φ = 2986917120.

The previous prime is 5644423063. The next prime is 5644423073. The reversal of 5644423065 is 5603244465.

It is not a de Polignac number, because 5644423065 - 2¹ = 5644423063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5644423063) 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 31 ways as a sum of consecutive naturals, for example, 1158735 + ... + 1163595.

It is an arithmetic number, because the mean of its divisors is an integer number (284427000).

Almost surely, 2^5644423065 is an apocalyptic number.

It is an amenable number.

5644423065 is a deficient number, since it is larger than the sum of its proper divisors (3457240935).

5644423065 is a wasteful number, since it uses less digits than its factorization.

5644423065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457.

The product of its (nonzero) digits is 345600, while the sum is 39.

The square root of 5644423065 is about 75129.3755131773. The cubic root of 5644423065 is about 1780.4912864544.

The spelling of 5644423065 in words is "five billion, six hundred forty-four million, four hundred twenty-three thousand, sixty-five".