6480181 has 4 divisors (see below), whose sum is σ = 6761952. Its totient is φ = 6198412.

The previous prime is 6480167. The next prime is 6480191. The reversal of 6480181 is 1810846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6480181 - 2⁷ = 6480053 is a prime.

It is a super-2 number, since 2×6480181² = 83985491585522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6480191) 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 3 ways as a sum of consecutive naturals, for example, 140851 + ... + 140896.

It is an arithmetic number, because the mean of its divisors is an integer number (1690488).

Almost surely, 2^6480181 is an apocalyptic number.

It is an amenable number.

6480181 is a deficient number, since it is larger than the sum of its proper divisors (281771).

6480181 is a wasteful number, since it uses less digits than its factorization.

6480181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281770.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 6480181 is about 2545.6199637809. The cubic root of 6480181 is about 186.4356861716.

The spelling of 6480181 in words is "six million, four hundred eighty thousand, one hundred eighty-one".