641830 has 32 divisors (see below), whose sum is σ = 1353024. Its totient is φ = 214656.

The previous prime is 641827. The next prime is 641833. The reversal of 641830 is 38146.

641830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (641827) and next prime (641833).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3624 + ... + 3796.

It is an arithmetic number, because the mean of its divisors is an integer number (42282).

2⁶⁴¹⁸³⁰ is an apocalyptic number.

641830 is an abundant number, since it is smaller than the sum of its proper divisors (711194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641830 is a wasteful number, since it uses less digits than its factorization.

641830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 641830 is about 801.1429335643. The cubic root of 641830 is about 86.2594472603.

Adding to 641830 its reverse (38146), we get a palindrome (679976).

The spelling of 641830 in words is "six hundred forty-one thousand, eight hundred thirty".