7663045657 has 2 divisors, whose sum is σ = 7663045658. Its totient is φ = 7663045656.

The previous prime is 7663045627. The next prime is 7663045711. The reversal of 7663045657 is 7565403667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6918246976 + 744798681 = 83176^2 + 27291^2 .

It is an emirp because it is prime and its reverse (7565403667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7663045657 - 2⁷ = 7663045529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7663045657.

It is not a weakly prime, because it can be changed into another prime (7663045627) 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, 3831522828 + 3831522829.

It is an arithmetic number, because the mean of its divisors is an integer number (3831522829).

Almost surely, 2^7663045657 is an apocalyptic number.

It is an amenable number.

7663045657 is a deficient number, since it is larger than the sum of its proper divisors (1).

7663045657 is an equidigital number, since it uses as much as digits as its factorization.

7663045657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 49.

The square root of 7663045657 is about 87538.8237126819. The cubic root of 7663045657 is about 1971.5167493268.

The spelling of 7663045657 in words is "seven billion, six hundred sixty-three million, forty-five thousand, six hundred fifty-seven".