64004678 has 16 divisors (see below), whose sum is σ = 96949440. Its totient is φ = 31690176.

The previous prime is 64004671. The next prime is 64004687. The reversal of 64004678 is 87640046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64004671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139826 + ... + 140282.

It is an arithmetic number, because the mean of its divisors is an integer number (6059340).

Almost surely, 2^64004678 is an apocalyptic number.

64004678 is a deficient number, since it is larger than the sum of its proper divisors (32944762).

64004678 is a wasteful number, since it uses less digits than its factorization.

64004678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 64004678 is about 8000.2923696575. The cubic root of 64004678 is about 400.0097455959.

The spelling of 64004678 in words is "sixty-four million, four thousand, six hundred seventy-eight".