6484606721 has 2 divisors, whose sum is σ = 6484606722. Its totient is φ = 6484606720.

The previous prime is 6484606703. The next prime is 6484606747. The reversal of 6484606721 is 1276064846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4700473600 + 1784133121 = 68560^2 + 42239^2 .

It is a cyclic number.

It is not a de Polignac number, because 6484606721 - 2²⁶ = 6417497857 is a prime.

It is not a weakly prime, because it can be changed into another prime (6484606771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3242303360 + 3242303361.

It is an arithmetic number, because the mean of its divisors is an integer number (3242303361).

Almost surely, 2^6484606721 is an apocalyptic number.

It is an amenable number.

6484606721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6484606721 is an equidigital number, since it uses as much as digits as its factorization.

6484606721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 6484606721 is about 80527.0558321860. The cubic root of 6484606721 is about 1864.7811937740.

The spelling of 6484606721 in words is "six billion, four hundred eighty-four million, six hundred six thousand, seven hundred twenty-one".