63645850 has 12 divisors (see below), whose sum is σ = 118381374. Its totient is φ = 25458320.

The previous prime is 63645833. The next prime is 63645859. The reversal of 63645850 is 5854636.

63645850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 61011721 + 2634129 = 7811^2 + 1623^2 .

It is not an unprimeable number, because it can be changed into a prime (63645859) 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 in 5 ways as a sum of consecutive naturals, for example, 636409 + ... + 636508.

Almost surely, 2^63645850 is an apocalyptic number.

63645850 is a deficient number, since it is larger than the sum of its proper divisors (54735524).

63645850 is a wasteful number, since it uses less digits than its factorization.

63645850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272929 (or 1272924 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 63645850 is about 7977.8349193249. The cubic root of 63645850 is about 399.2608223825.

The spelling of 63645850 in words is "sixty-three million, six hundred forty-five thousand, eight hundred fifty".