6742181 has 8 divisors (see below), whose sum is σ = 7029720. Its totient is φ = 6458368.

The previous prime is 6742171. The next prime is 6742189. The reversal of 6742181 is 1812476.

It can be written as a sum of positive squares in 4 ways, for example, as 3094081 + 3648100 = 1759^2 + 1910^2 .

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 6742181 - 2⁶ = 6742117 is a prime.

It is a super-2 number, since 2×6742181² = 90914009273522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6742189) 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, 3125 + ... + 4821.

It is an arithmetic number, because the mean of its divisors is an integer number (878715).

Almost surely, 2^6742181 is an apocalyptic number.

It is an amenable number.

6742181 is a deficient number, since it is larger than the sum of its proper divisors (287539).

6742181 is a wasteful number, since it uses less digits than its factorization.

6742181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863.

The product of its digits is 2688, while the sum is 29.

The square root of 6742181 is about 2596.5710080797. The cubic root of 6742181 is about 188.9151565289.

The spelling of 6742181 in words is "six million, seven hundred forty-two thousand, one hundred eighty-one".