63805972 has 12 divisors (see below), whose sum is σ = 112410900. Its totient is φ = 31688576.

The previous prime is 63805949. The next prime is 63805991. The reversal of 63805972 is 27950836.

63805972 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 2 ways, for example, as 19236996 + 44568976 = 4386^2 + 6676^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 52933 + ... + 54124.

It is an arithmetic number, because the mean of its divisors is an integer number (9367575).

Almost surely, 2^63805972 is an apocalyptic number.

It is an amenable number.

63805972 is a deficient number, since it is larger than the sum of its proper divisors (48604928).

63805972 is a wasteful number, since it uses less digits than its factorization.

63805972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107210 (or 107208 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 63805972 is about 7987.8640449121. The cubic root of 63805972 is about 399.5953658160.

The spelling of 63805972 in words is "sixty-three million, eight hundred five thousand, nine hundred seventy-two".