63764864 has 16 divisors (see below), whose sum is σ = 127031820. Its totient is φ = 31882368.

The previous prime is 63764863. The next prime is 63764903. The reversal of 63764864 is 46846736.

It is a happy number.

63764864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (16).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63764863) 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 as a sum of consecutive naturals, namely, 248954 + ... + 249209.

Almost surely, 2^63764864 is an apocalyptic number.

63764864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

63764864 is a deficient number, since it is larger than the sum of its proper divisors (63266956).

63764864 is an equidigital number, since it uses as much as digits as its factorization.

63764864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498177 (or 498165 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 63764864 is about 7985.2904768706. The cubic root of 63764864 is about 399.5095321824.

The spelling of 63764864 in words is "sixty-three million, seven hundred sixty-four thousand, eight hundred sixty-four".