5644744564 has 12 divisors (see below), whose sum is σ = 10013622724. Its totient is φ = 2783709504.

The previous prime is 5644744537. The next prime is 5644744601. The reversal of 5644744564 is 4654474465.

It can be written as a sum of positive squares in 2 ways, for example, as 4454494564 + 1190250000 = 66742^2 + 34500^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9665367 + ... + 9665950.

Almost surely, 2^5644744564 is an apocalyptic number.

It is an amenable number.

5644744564 is a deficient number, since it is larger than the sum of its proper divisors (4368878160).

5644744564 is a wasteful number, since it uses less digits than its factorization.

5644744564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19331394 (or 19331392 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 49.

The square root of 5644744564 is about 75131.5151184907. The cubic root of 5644744564 is about 1780.5250906356.

The spelling of 5644744564 in words is "five billion, six hundred forty-four million, seven hundred forty-four thousand, five hundred sixty-four".