5644867705 has 4 divisors (see below), whose sum is σ = 6773841252. Its totient is φ = 4515894160.

The previous prime is 5644867691. The next prime is 5644867721. The reversal of 5644867705 is 5077684465.

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 890903104 + 4753964601 = 29848^2 + 68949^2 .

It is not a de Polignac number, because 5644867705 - 2²⁵ = 5611313273 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 3 ways as a sum of consecutive naturals, for example, 564486766 + ... + 564486775.

It is an arithmetic number, because the mean of its divisors is an integer number (1693460313).

Almost surely, 2^5644867705 is an apocalyptic number.

It is an amenable number.

5644867705 is a deficient number, since it is larger than the sum of its proper divisors (1128973547).

5644867705 is a wasteful number, since it uses less digits than its factorization.

5644867705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128973546.

The product of its (nonzero) digits is 5644800, while the sum is 52.

The square root of 5644867705 is about 75132.3346169943. The cubic root of 5644867705 is about 1780.5380380207.

The spelling of 5644867705 in words is "five billion, six hundred forty-four million, eight hundred sixty-seven thousand, seven hundred five".