64318784 has 14 divisors (see below), whose sum is σ = 127632714. Its totient is φ = 32159360.

The previous prime is 64318783. The next prime is 64318789. The reversal of 64318784 is 48781346.

64318784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47997184 + 16321600 = 6928^2 + 4040^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64318783) 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, 502427 + ... + 502554.

Almost surely, 2^64318784 is an apocalyptic number.

64318784 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64318784 is a deficient number, since it is larger than the sum of its proper divisors (63313930).

64318784 is a wasteful number, since it uses less digits than its factorization.

64318784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004993 (or 1004983 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 64318784 is about 8019.8992512375. The cubic root of 64318784 is about 400.6630336919.

The spelling of 64318784 in words is "sixty-four million, three hundred eighteen thousand, seven hundred eighty-four".