641882 has 4 divisors (see below), whose sum is σ = 962826. Its totient is φ = 320940.

The previous prime is 641881. The next prime is 641891. The reversal of 641882 is 288146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 288146 = 2 ⋅144073.

It can be written as a sum of positive squares in only one way, i.e., 638401 + 3481 = 799^2 + 59^2 .

It is not an unprimeable number, because it can be changed into a prime (641881) 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 as a sum of consecutive naturals, namely, 160469 + ... + 160472.

2⁶⁴¹⁸⁸² is an apocalyptic number.

641882 is a deficient number, since it is larger than the sum of its proper divisors (320944).

641882 is a wasteful number, since it uses less digits than its factorization.

641882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320943.

The product of its digits is 3072, while the sum is 29.

The square root of 641882 is about 801.1753865415. The cubic root of 641882 is about 86.2617767298.

The spelling of 641882 in words is "six hundred forty-one thousand, eight hundred eighty-two".