63923664 has 40 divisors (see below), whose sum is σ = 188728000. Its totient is φ = 18263808.

The previous prime is 63923663. The next prime is 63923687. The reversal of 63923664 is 46632936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63923663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94789 + ... + 95460.

It is an arithmetic number, because the mean of its divisors is an integer number (4718200).

Almost surely, 2^63923664 is an apocalyptic number.

It is an amenable number.

63923664 is an abundant number, since it is smaller than the sum of its proper divisors (124804336).

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

63923664 is a wasteful number, since it uses less digits than its factorization.

63923664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190267 (or 190261 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The square root of 63923664 is about 7995.2275764984. The cubic root of 63923664 is about 399.8409033957.

The spelling of 63923664 in words is "sixty-three million, nine hundred twenty-three thousand, six hundred sixty-four".