63857147 has 2 divisors, whose sum is σ = 63857148. Its totient is φ = 63857146.

The previous prime is 63857141. The next prime is 63857173. The reversal of 63857147 is 74175836.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63857147 - 2¹⁰ = 63856123 is a prime.

It is not a weakly prime, because it can be changed into another prime (63857141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31928573 + 31928574.

It is an arithmetic number, because the mean of its divisors is an integer number (31928574).

Almost surely, 2^63857147 is an apocalyptic number.

63857147 is a deficient number, since it is larger than the sum of its proper divisors (1).

63857147 is an equidigital number, since it uses as much as digits as its factorization.

63857147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 63857147 is about 7991.0666997592. The cubic root of 63857147 is about 399.7021678784.

The spelling of 63857147 in words is "sixty-three million, eight hundred fifty-seven thousand, one hundred forty-seven".