5664565549 has 2 divisors, whose sum is σ = 5664565550. Its totient is φ = 5664565548.

The previous prime is 5664565547. The next prime is 5664565561. The reversal of 5664565549 is 9455654665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5600277225 + 64288324 = 74835^2 + 8018^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664565549 - 2¹ = 5664565547 is a prime.

Together with 5664565547, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5664565549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5664565547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832282774 + 2832282775.

It is an arithmetic number, because the mean of its divisors is an integer number (2832282775).

Almost surely, 2^5664565549 is an apocalyptic number.

It is an amenable number.

5664565549 is a deficient number, since it is larger than the sum of its proper divisors (1).

5664565549 is an equidigital number, since it uses as much as digits as its factorization.

5664565549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440000, while the sum is 55.

The square root of 5664565549 is about 75263.3081188968. The cubic root of 5664565549 is about 1782.6067043808.

The spelling of 5664565549 in words is "five billion, six hundred sixty-four million, five hundred sixty-five thousand, five hundred forty-nine".