641172200 has 48 divisors (see below), whose sum is σ = 1502522880. Its totient is φ = 254439360.

The previous prime is 641172199. The next prime is 641172239. The reversal of 641172200 is 2271146.

It is a super-2 number, since 2×641172200² = 822203580105680000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12779 + ... + 38021.

It is an arithmetic number, because the mean of its divisors is an integer number (31302560).

Almost surely, 2^641172200 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 641172200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751261440).

641172200 is an abundant number, since it is smaller than the sum of its proper divisors (861350680).

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

641172200 is a wasteful number, since it uses less digits than its factorization.

641172200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25386 (or 25377 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 641172200 is about 25321.3783195149. The cubic root of 641172200 is about 862.2996860303.

The spelling of 641172200 in words is "six hundred forty-one million, one hundred seventy-two thousand, two hundred".