63845473 has 2 divisors, whose sum is σ = 63845474. Its totient is φ = 63845472.

The previous prime is 63845437. The next prime is 63845503. The reversal of 63845473 is 37454836.

63845473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (63845437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60093504 + 3751969 = 7752^2 + 1937^2 .

It is a cyclic number.

It is not a de Polignac number, because 63845473 - 2⁹ = 63844961 is a prime.

It is not a weakly prime, because it can be changed into another prime (63845413) 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, 31922736 + 31922737.

It is an arithmetic number, because the mean of its divisors is an integer number (31922737).

Almost surely, 2^63845473 is an apocalyptic number.

It is an amenable number.

63845473 is a deficient number, since it is larger than the sum of its proper divisors (1).

63845473 is an equidigital number, since it uses as much as digits as its factorization.

63845473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 40.

The square root of 63845473 is about 7990.3362257167. The cubic root of 63845473 is about 399.6778093026.

The spelling of 63845473 in words is "sixty-three million, eight hundred forty-five thousand, four hundred seventy-three".