5664620161 has 2 divisors, whose sum is σ = 5664620162. Its totient is φ = 5664620160.

The previous prime is 5664620089. The next prime is 5664620177. The reversal of 5664620161 is 1610264665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3798380161 + 1866240000 = 61631^2 + 43200^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664620161 - 2¹³ = 5664611969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5664620161.

It is not a weakly prime, because it can be changed into another prime (5664629161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832310080 + 2832310081.

It is an arithmetic number, because the mean of its divisors is an integer number (2832310081).

Almost surely, 2^5664620161 is an apocalyptic number.

It is an amenable number.

5664620161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5664620161 is an equidigital number, since it uses as much as digits as its factorization.

5664620161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 5664620161 is about 75263.6709242912. The cubic root of 5664620161 is about 1782.6124330581.

The spelling of 5664620161 in words is "five billion, six hundred sixty-four million, six hundred twenty thousand, one hundred sixty-one".