64038864 has 40 divisors (see below), whose sum is σ = 175167360. Its totient is φ = 20090368.

The previous prime is 64038857. The next prime is 64038907. The reversal of 64038864 is 46883046.

64038864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64038864² = 8201952204820992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38424 + ... + 40055.

It is an arithmetic number, because the mean of its divisors is an integer number (4379184).

Almost surely, 2^64038864 is an apocalyptic number.

It is an amenable number.

64038864 is an abundant number, since it is smaller than the sum of its proper divisors (111128496).

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

64038864 is a wasteful number, since it uses less digits than its factorization.

64038864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78507 (or 78501 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 64038864 is about 8002.4286313594. The cubic root of 64038864 is about 400.0809502832.

The spelling of 64038864 in words is "sixty-four million, thirty-eight thousand, eight hundred sixty-four".