2604665137 has 2 divisors, whose sum is σ = 2604665138. Its totient is φ = 2604665136.

The previous prime is 2604665093. The next prime is 2604665143. The reversal of 2604665137 is 7315664062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2424676081 + 179989056 = 49241^2 + 13416^2 .

It is a cyclic number.

It is not a de Polignac number, because 2604665137 - 2²⁷ = 2470447409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2604665137.

It is not a weakly prime, because it can be changed into another prime (2604665197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302332568 + 1302332569.

It is an arithmetic number, because the mean of its divisors is an integer number (1302332569).

Almost surely, 2^2604665137 is an apocalyptic number.

It is an amenable number.

2604665137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2604665137 is an equidigital number, since it uses as much as digits as its factorization.

2604665137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 2604665137 is about 51035.9200661652. The cubic root of 2604665137 is about 1375.8907967872.

The spelling of 2604665137 in words is "two billion, six hundred four million, six hundred sixty-five thousand, one hundred thirty-seven".