641040200 has 48 divisors (see below), whose sum is σ = 1501206000. Its totient is φ = 254560320.

The previous prime is 641040187. The next prime is 641040203. The reversal of 641040200 is 2040146.

It is not an unprimeable number, because it can be changed into a prime (641040203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16271 + ... + 39329.

It is an arithmetic number, because the mean of its divisors is an integer number (31275125).

Almost surely, 2^641040200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641040200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750603000).

641040200 is an abundant number, since it is smaller than the sum of its proper divisors (860165800).

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

641040200 is a wasteful number, since it uses less digits than its factorization.

641040200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23214 (or 23205 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 641040200 is about 25318.7716921655. The cubic root of 641040200 is about 862.2405072477.

Adding to 641040200 its reverse (2040146), we get a palindrome (643080346).

The spelling of 641040200 in words is "six hundred forty-one million, forty thousand, two hundred".