63406646 has 8 divisors (see below), whose sum is σ = 95265480. Its totient is φ = 31651488.

The previous prime is 63406627. The next prime is 63406649. The reversal of 63406646 is 64660436.

63406646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63406649) 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, 24371 + ... + 26846.

It is an arithmetic number, because the mean of its divisors is an integer number (11908185).

Almost surely, 2^63406646 is an apocalyptic number.

63406646 is a deficient number, since it is larger than the sum of its proper divisors (31858834).

63406646 is a wasteful number, since it uses less digits than its factorization.

63406646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51838.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 63406646 is about 7962.8290198899. The cubic root of 63406646 is about 398.7600058416.

The spelling of 63406646 in words is "sixty-three million, four hundred six thousand, six hundred forty-six".