641135 has 8 divisors (see below), whose sum is σ = 839376. Its totient is φ = 466240.

The previous prime is 641131. The next prime is 641143. The reversal of 641135 is 531146.

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

It is not a de Polignac number, because 641135 - 2² = 641131 is a prime.

It is a super-2 number, since 2×641135² = 822108176450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5774 + ... + 5883.

It is an arithmetic number, because the mean of its divisors is an integer number (104922).

2⁶⁴¹¹³⁵ is an apocalyptic number.

641135 is a deficient number, since it is larger than the sum of its proper divisors (198241).

641135 is a wasteful number, since it uses less digits than its factorization.

641135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11673.

The product of its digits is 360, while the sum is 20.

The square root of 641135 is about 800.7090607705. The cubic root of 641135 is about 86.2283009195.

It can be divided in two parts, 6411 and 35, that added together give a palindrome (6446).

The spelling of 641135 in words is "six hundred forty-one thousand, one hundred thirty-five".