63636906 has 32 divisors (see below), whose sum is σ = 133890048. Its totient is φ = 20124720.

The previous prime is 63636889. The next prime is 63636907. The reversal of 63636906 is 60963636.

63636906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63636907) 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 15 ways as a sum of consecutive naturals, for example, 15711 + ... + 19341.

It is an arithmetic number, because the mean of its divisors is an integer number (4184064).

Almost surely, 2^63636906 is an apocalyptic number.

63636906 is an abundant number, since it is smaller than the sum of its proper divisors (70253142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63636906 is a wasteful number, since it uses less digits than its factorization.

63636906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786.

The product of its (nonzero) digits is 104976, while the sum is 39.

The square root of 63636906 is about 7977.2743465422. The cubic root of 63636906 is about 399.2421191150.

The spelling of 63636906 in words is "sixty-three million, six hundred thirty-six thousand, nine hundred six".