6738181 has 8 divisors (see below), whose sum is σ = 6956280. Its totient is φ = 6522048.

The previous prime is 6738169. The next prime is 6738187. The reversal of 6738181 is 1818376.

It can be written as a sum of positive squares in 4 ways, for example, as 2873025 + 3865156 = 1695^2 + 1966^2 .

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 6738181 - 2⁹ = 6737669 is a prime.

It is a super-2 number, since 2×6738181² = 90806166377522, 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 (6738187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9615 + ... + 10291.

It is an arithmetic number, because the mean of its divisors is an integer number (869535).

Almost surely, 2^6738181 is an apocalyptic number.

It is an amenable number.

6738181 is a deficient number, since it is larger than the sum of its proper divisors (218099).

6738181 is a wasteful number, since it uses less digits than its factorization.

6738181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983.

The product of its digits is 8064, while the sum is 34.

The square root of 6738181 is about 2595.8006471992. The cubic root of 6738181 is about 188.8777892875.

The spelling of 6738181 in words is "six million, seven hundred thirty-eight thousand, one hundred eighty-one".