641039 has 4 divisors (see below), whose sum is σ = 732624. Its totient is φ = 549456.

The previous prime is 640993. The next prime is 641051. The reversal of 641039 is 930146.

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

It is a cyclic number.

It is not a de Polignac number, because 641039 - 2¹⁶ = 575503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641089) 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, 45782 + ... + 45795.

It is an arithmetic number, because the mean of its divisors is an integer number (183156).

2⁶⁴¹⁰³⁹ is an apocalyptic number.

641039 is a deficient number, since it is larger than the sum of its proper divisors (91585).

641039 is an equidigital number, since it uses as much as digits as its factorization.

641039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91584.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 641039 is about 800.6491116588. The cubic root of 641039 is about 86.2239969222.

The spelling of 641039 in words is "six hundred forty-one thousand, thirty-nine".