64845003 has 4 divisors (see below), whose sum is σ = 86460008. Its totient is φ = 43230000.

The previous prime is 64844999. The next prime is 64845019. The reversal of 64845003 is 30054846.

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

It is not a de Polignac number, because 64845003 - 2² = 64844999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64845083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10807498 + ... + 10807503.

It is an arithmetic number, because the mean of its divisors is an integer number (21615002).

Almost surely, 2^64845003 is an apocalyptic number.

64845003 is a deficient number, since it is larger than the sum of its proper divisors (21615005).

64845003 is a wasteful number, since it uses less digits than its factorization.

64845003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21615004.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 64845003 is about 8052.6395051561. The cubic root of 64845003 is about 401.7527315294.

Adding to 64845003 its reverse (30054846), we get a palindrome (94899849).

The spelling of 64845003 in words is "sixty-four million, eight hundred forty-five thousand, three".