64004999 has 4 divisors (see below), whose sum is σ = 64028640. Its totient is φ = 63981360.

The previous prime is 64004989. The next prime is 64005031. The reversal of 64004999 is 99940046.

64004999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64004999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64004959) 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 in 3 ways as a sum of consecutive naturals, for example, 7142 + ... + 13379.

It is an arithmetic number, because the mean of its divisors is an integer number (16007160).

Almost surely, 2^64004999 is an apocalyptic number.

64004999 is a deficient number, since it is larger than the sum of its proper divisors (23641).

64004999 is a wasteful number, since it uses less digits than its factorization.

64004999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23640.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 64004999 is about 8000.3124313992. The cubic root of 64004999 is about 400.0104143122.

The spelling of 64004999 in words is "sixty-four million, four thousand, nine hundred ninety-nine".