63785257 has 2 divisors, whose sum is σ = 63785258. Its totient is φ = 63785256.

The previous prime is 63785219. The next prime is 63785291. The reversal of 63785257 is 75258736.

63785257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35652841 + 28132416 = 5971^2 + 5304^2 .

It is a cyclic number.

It is not a de Polignac number, because 63785257 - 2¹⁹ = 63260969 is a prime.

It is not a weakly prime, because it can be changed into another prime (63725257) 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, 31892628 + 31892629.

It is an arithmetic number, because the mean of its divisors is an integer number (31892629).

Almost surely, 2^63785257 is an apocalyptic number.

It is an amenable number.

63785257 is a deficient number, since it is larger than the sum of its proper divisors (1).

63785257 is an equidigital number, since it uses as much as digits as its factorization.

63785257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 63785257 is about 7986.5672851357. The cubic root of 63785257 is about 399.5521174402.

The spelling of 63785257 in words is "sixty-three million, seven hundred eighty-five thousand, two hundred fifty-seven".