6475772657 has 2 divisors, whose sum is σ = 6475772658. Its totient is φ = 6475772656.

The previous prime is 6475772647. The next prime is 6475772707. The reversal of 6475772657 is 7562775746.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6393761521 + 82011136 = 79961^2 + 9056^2 .

It is a cyclic number.

It is not a de Polignac number, because 6475772657 - 2³⁰ = 5402030833 is a prime.

It is not a weakly prime, because it can be changed into another prime (6475772647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3237886328 + 3237886329.

It is an arithmetic number, because the mean of its divisors is an integer number (3237886329).

Almost surely, 2^6475772657 is an apocalyptic number.

It is an amenable number.

6475772657 is a deficient number, since it is larger than the sum of its proper divisors (1).

6475772657 is an equidigital number, since it uses as much as digits as its factorization.

6475772657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17287200, while the sum is 56.

The square root of 6475772657 is about 80472.1856109302. The cubic root of 6475772657 is about 1863.9340037274.

The spelling of 6475772657 in words is "six billion, four hundred seventy-five million, seven hundred seventy-two thousand, six hundred fifty-seven".