63669656 has 16 divisors (see below), whose sum is σ = 120541200. Its totient is φ = 31525344.

The previous prime is 63669653. The next prime is 63669677. The reversal of 63669656 is 65696636.

63669656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 63669656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63669653) 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 3 ways as a sum of consecutive naturals, for example, 37811 + ... + 39458.

It is an arithmetic number, because the mean of its divisors is an integer number (7533825).

Almost surely, 2^63669656 is an apocalyptic number.

It is an amenable number.

63669656 is a deficient number, since it is larger than the sum of its proper divisors (56871544).

63669656 is a wasteful number, since it uses less digits than its factorization.

63669656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77378 (or 77374 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 47.

The square root of 63669656 is about 7979.3267886458. The cubic root of 63669656 is about 399.3105958206.

The spelling of 63669656 in words is "sixty-three million, six hundred sixty-nine thousand, six hundred fifty-six".