641200 has 60 divisors (see below), whose sum is σ = 1768240. Its totient is φ = 218880.

The previous prime is 641197. The next prime is 641203. The reversal of 641200 is 2146.

It is an interprime number because it is at equal distance from previous prime (641197) and next prime (641203).

It is a super-2 number, since 2×641200² = 822274880000, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (641203) 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, 2686 + ... + 2914.

2⁶⁴¹²⁰⁰ 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 641200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884120).

641200 is an abundant number, since it is smaller than the sum of its proper divisors (1127040).

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

641200 is a wasteful number, since it uses less digits than its factorization.

641200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 641200 is about 800.7496487667. The cubic root of 641200 is about 86.2312148405.

Adding to 641200 its reverse (2146), we get a palindrome (643346).

It can be divided in two parts, 641 and 200, that added together give a square (841 = 29²).

The spelling of 641200 in words is "six hundred forty-one thousand, two hundred".