6604964137 has 2 divisors, whose sum is σ = 6604964138. Its totient is φ = 6604964136.

The previous prime is 6604964081. The next prime is 6604964143. The reversal of 6604964137 is 7314694066.

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., 6574615056 + 30349081 = 81084^2 + 5509^2 .

It is a cyclic number.

It is not a de Polignac number, because 6604964137 - 2²⁷ = 6470746409 is a prime.

It is not a weakly prime, because it can be changed into another prime (6604964147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302482068 + 3302482069.

It is an arithmetic number, because the mean of its divisors is an integer number (3302482069).

Almost surely, 2^6604964137 is an apocalyptic number.

It is an amenable number.

6604964137 is a deficient number, since it is larger than the sum of its proper divisors (1).

6604964137 is an equidigital number, since it uses as much as digits as its factorization.

6604964137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 6604964137 is about 81270.9304548681. The cubic root of 6604964137 is about 1876.2476211595.

The spelling of 6604964137 in words is "six billion, six hundred four million, nine hundred sixty-four thousand, one hundred thirty-seven".