641938 has 8 divisors (see below), whose sum is σ = 1050480. Its totient is φ = 291780.

The previous prime is 641929. The next prime is 641959. The reversal of 641938 is 839146.

641938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14568 + ... + 14611.

It is an arithmetic number, because the mean of its divisors is an integer number (131310).

2⁶⁴¹⁹³⁸ is an apocalyptic number.

641938 is a deficient number, since it is larger than the sum of its proper divisors (408542).

641938 is a wasteful number, since it uses less digits than its factorization.

641938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29192.

The product of its digits is 5184, while the sum is 31.

The square root of 641938 is about 801.2103344316. The cubic root of 641938 is about 86.2642852485.

It can be divided in two parts, 64 and 1938, that added together give a palindrome (2002).

The spelling of 641938 in words is "six hundred forty-one thousand, nine hundred thirty-eight".