3573336721 has 2 divisors, whose sum is σ = 3573336722. Its totient is φ = 3573336720.

The previous prime is 3573336713. The next prime is 3573336749. The reversal of 3573336721 is 1276333753.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2411890321 + 1161446400 = 49111^2 + 34080^2 .

It is a cyclic number.

It is not a de Polignac number, because 3573336721 - 2³ = 3573336713 is a prime.

It is not a weakly prime, because it can be changed into another prime (3573337721) by changing a digit.

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 as a sum of consecutive naturals, namely, 1786668360 + 1786668361.

It is an arithmetic number, because the mean of its divisors is an integer number (1786668361).

Almost surely, 2^3573336721 is an apocalyptic number.

It is an amenable number.

3573336721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3573336721 is an equidigital number, since it uses as much as digits as its factorization.

3573336721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 40.

The square root of 3573336721 is about 59777.3930595840. The cubic root of 3573336721 is about 1528.8257213506.

The spelling of 3573336721 in words is "three billion, five hundred seventy-three million, three hundred thirty-six thousand, seven hundred twenty-one".