8640003 has 8 divisors (see below), whose sum is σ = 12126400. Its totient is φ = 5456808.

The previous prime is 8640001. The next prime is 8640013. The reversal of 8640003 is 3000468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8640003 - 2¹ = 8640001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8640001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75733 + ... + 75846.

It is an arithmetic number, because the mean of its divisors is an integer number (1515800).

Almost surely, 2^8640003 is an apocalyptic number.

8640003 is a deficient number, since it is larger than the sum of its proper divisors (3486397).

8640003 is a wasteful number, since it uses less digits than its factorization.

8640003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151601.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 8640003 is about 2939.3882016501. The cubic root of 8640003 is about 205.1971373509.

The spelling of 8640003 in words is "eight million, six hundred forty thousand, three".