641075 has 6 divisors (see below), whose sum is σ = 794964. Its totient is φ = 512840.

The previous prime is 641057. The next prime is 641077. The reversal of 641075 is 570146.

It is a de Polignac number, because none of the positive numbers 2^k-641075 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641075.

It is not an unprimeable number, because it can be changed into a prime (641077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12797 + ... + 12846.

It is an arithmetic number, because the mean of its divisors is an integer number (132494).

2⁶⁴¹⁰⁷⁵ is an apocalyptic number.

641075 is a deficient number, since it is larger than the sum of its proper divisors (153889).

641075 is a wasteful number, since it uses less digits than its factorization.

641075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25653 (or 25648 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 641075 is about 800.6715931017. The cubic root of 641075 is about 86.2256109715.

The spelling of 641075 in words is "six hundred forty-one thousand, seventy-five".