641180 has 12 divisors (see below), whose sum is σ = 1346520. Its totient is φ = 256464.

The previous prime is 641167. The next prime is 641197. The reversal of 641180 is 81146.

It is a super-2 number, since 2×641180² = 822223584800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 32059 = 641180 / (6 + 4 + 1 + 1 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

641180 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16010 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (112210).

2⁶⁴¹¹⁸⁰ is an apocalyptic number.

It is an amenable number.

641180 is an abundant number, since it is smaller than the sum of its proper divisors (705340).

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

641180 is a wasteful number, since it uses less digits than its factorization.

641180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32068 (or 32066 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 641180 is about 800.7371603716. The cubic root of 641180 is about 86.2303182704.

The spelling of 641180 in words is "six hundred forty-one thousand, one hundred eighty".