63405964 has 24 divisors (see below), whose sum is σ = 117255600. Its totient is φ = 29917440.

The previous prime is 63405959. The next prime is 63405973. The reversal of 63405964 is 46950436.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19872 + ... + 22840.

It is an arithmetic number, because the mean of its divisors is an integer number (4885650).

Almost surely, 2^63405964 is an apocalyptic number.

It is an amenable number.

63405964 is a deficient number, since it is larger than the sum of its proper divisors (53849636).

63405964 is a wasteful number, since it uses less digits than its factorization.

63405964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273 (or 3271 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 63405964 is about 7962.7861957986. The cubic root of 63405964 is about 398.7585761529.

The spelling of 63405964 in words is "sixty-three million, four hundred five thousand, nine hundred sixty-four".