64003 has 4 divisors (see below), whose sum is σ = 66240. Its totient is φ = 61768.

The previous prime is 63997. The next prime is 64007. The reversal of 64003 is 30046.

64003 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-64003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075 + ... + 1132.

It is an arithmetic number, because the mean of its divisors is an integer number (16560).

2⁶⁴⁰⁰³ is an apocalyptic number.

64003 is a deficient number, since it is larger than the sum of its proper divisors (2237).

64003 is a wasteful number, since it uses less digits than its factorization.

64003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 64003 is about 252.9881420146. The cubic root of 64003 is about 40.0006249902. Note that the first 3 decimals are identical.

Adding to 64003 its reverse (30046), we get a palindrome (94049).

The spelling of 64003 in words is "sixty-four thousand, three".