641003 has 8 divisors (see below), whose sum is σ = 736320. Its totient is φ = 551880.

The previous prime is 640993. The next prime is 641051. The reversal of 641003 is 300146.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641083) 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 7 ways as a sum of consecutive naturals, for example, 1325 + ... + 1742.

It is an arithmetic number, because the mean of its divisors is an integer number (92040).

2⁶⁴¹⁰⁰³ is an apocalyptic number.

641003 is a deficient number, since it is larger than the sum of its proper divisors (95317).

641003 is a wasteful number, since it uses less digits than its factorization.

641003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 641003 is about 800.6266295846. The cubic root of 641003 is about 86.2223828124. Note that the first 3 decimals are identical.

Adding to 641003 its reverse (300146), we get a palindrome (941149).

The spelling of 641003 in words is "six hundred forty-one thousand, three".