6604504657 has 2 divisors, whose sum is σ = 6604504658. Its totient is φ = 6604504656.

The previous prime is 6604504651. The next prime is 6604504661. The reversal of 6604504657 is 7564054066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5284708416 + 1319796241 = 72696^2 + 36329^2 .

It is a cyclic number.

It is not a de Polignac number, because 6604504657 - 2³ = 6604504649 is a prime.

It is not a weakly prime, because it can be changed into another prime (6604504651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302252328 + 3302252329.

It is an arithmetic number, because the mean of its divisors is an integer number (3302252329).

Almost surely, 2^6604504657 is an apocalyptic number.

It is an amenable number.

6604504657 is a deficient number, since it is larger than the sum of its proper divisors (1).

6604504657 is an equidigital number, since it uses as much as digits as its factorization.

6604504657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 43.

The square root of 6604504657 is about 81268.1035646827. The cubic root of 6604504657 is about 1876.2041125584.

The spelling of 6604504657 in words is "six billion, six hundred four million, five hundred four thousand, six hundred fifty-seven".