3564384721 has 2 divisors, whose sum is σ = 3564384722. Its totient is φ = 3564384720.

The previous prime is 3564384697. The next prime is 3564384793. The reversal of 3564384721 is 1274834653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2811650625 + 752734096 = 53025^2 + 27436^2 .

It is a cyclic number.

It is not a de Polignac number, because 3564384721 - 2⁵ = 3564384689 is a prime.

It is not a weakly prime, because it can be changed into another prime (3564388721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782192360 + 1782192361.

It is an arithmetic number, because the mean of its divisors is an integer number (1782192361).

Almost surely, 2^3564384721 is an apocalyptic number.

It is an amenable number.

3564384721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3564384721 is an equidigital number, since it uses as much as digits as its factorization.

3564384721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 3564384721 is about 59702.4682990578. The cubic root of 3564384721 is about 1527.5479713818.

The spelling of 3564384721 in words is "three billion, five hundred sixty-four million, three hundred eighty-four thousand, seven hundred twenty-one".