641013 has 8 divisors (see below), whose sum is σ = 866688. Its totient is φ = 421344.

The previous prime is 640993. The next prime is 641051. The reversal of 641013 is 310146.

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

It is not a de Polignac number, because 641013 - 2⁶ = 640949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 640983 and 641001.

It is a congruent 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, 1245 + ... + 1682.

It is an arithmetic number, because the mean of its divisors is an integer number (108336).

2⁶⁴¹⁰¹³ is an apocalyptic number.

It is an amenable number.

641013 is a deficient number, since it is larger than the sum of its proper divisors (225675).

641013 is a wasteful number, since it uses less digits than its factorization.

641013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 641013 is about 800.6328746685. The cubic root of 641013 is about 86.2228311823. Note that the first 3 decimals are identical.

Adding to 641013 its reverse (310146), we get a palindrome (951159).

The spelling of 641013 in words is "six hundred forty-one thousand, thirteen".