641184 has 24 divisors (see below), whose sum is σ = 1683360. Its totient is φ = 213696.

The previous prime is 641167. The next prime is 641197. The reversal of 641184 is 481146.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×641184² = 822233843712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

641184 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3244 + ... + 3435.

It is an arithmetic number, because the mean of its divisors is an integer number (70140).

2⁶⁴¹¹⁸⁴ is an apocalyptic number.

It is an amenable number.

641184 is an abundant number, since it is smaller than the sum of its proper divisors (1042176).

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

641184 is a wasteful number, since it uses less digits than its factorization.

641184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692 (or 6684 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 641184 is about 800.7396580662. The cubic root of 641184 is about 86.2304975859.

The spelling of 641184 in words is "six hundred forty-one thousand, one hundred eighty-four".