63685201 has 2 divisors, whose sum is σ = 63685202. Its totient is φ = 63685200.

The previous prime is 63685199. The next prime is 63685211. The reversal of 63685201 is 10258636.

63685201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63043600 + 641601 = 7940^2 + 801^2 .

It is a cyclic number.

It is not a de Polignac number, because 63685201 - 2¹ = 63685199 is a prime.

Together with 63685199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63685211) 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, 31842600 + 31842601.

It is an arithmetic number, because the mean of its divisors is an integer number (31842601).

Almost surely, 2^63685201 is an apocalyptic number.

It is an amenable number.

63685201 is a deficient number, since it is larger than the sum of its proper divisors (1).

63685201 is an equidigital number, since it uses as much as digits as its factorization.

63685201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 63685201 is about 7980.3008088668. The cubic root of 63685201 is about 399.3430905154.

The spelling of 63685201 in words is "sixty-three million, six hundred eighty-five thousand, two hundred one".