6468181 has 8 divisors (see below), whose sum is σ = 6729984. Its totient is φ = 6209760.

The previous prime is 6468179. The next prime is 6468191. The reversal of 6468181 is 1818646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6468181 - 2¹ = 6468179 is a prime.

It is a super-2 number, since 2×6468181² = 83674730897522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6468191) 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 7 ways as a sum of consecutive naturals, for example, 3486 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (841248).

Almost surely, 2^6468181 is an apocalyptic number.

6468181 is the 1609-th centered pentagonal number.

It is an amenable number.

6468181 is a deficient number, since it is larger than the sum of its proper divisors (261803).

6468181 is a wasteful number, since it uses less digits than its factorization.

6468181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its digits is 9216, while the sum is 34.

The square root of 6468181 is about 2543.2618819146. The cubic root of 6468181 is about 186.3205345206.

The spelling of 6468181 in words is "six million, four hundred sixty-eight thousand, one hundred eighty-one".