6432181 has 12 divisors (see below), whose sum is σ = 7541100. Its totient is φ = 5470080.

The previous prime is 6432163. The next prime is 6432187. The reversal of 6432181 is 1812346.

6432181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 933156 + 5499025 = 966^2 + 2345^2 .

It is not a de Polignac number, because 6432181 - 2⁵ = 6432149 is a prime.

It is a super-2 number, since 2×6432181² = 82745904833522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6432187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6861 + ... + 7741.

It is an arithmetic number, because the mean of its divisors is an integer number (628425).

Almost surely, 2^6432181 is an apocalyptic number.

It is an amenable number.

6432181 is a deficient number, since it is larger than the sum of its proper divisors (1108919).

6432181 is a wasteful number, since it uses less digits than its factorization.

6432181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1037 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 6432181 is about 2536.1744813794. The cubic root of 6432181 is about 185.9742227352.

The spelling of 6432181 in words is "six million, four hundred thirty-two thousand, one hundred eighty-one".