6823381 has 4 divisors (see below), whose sum is σ = 7058700. Its totient is φ = 6588064.

The previous prime is 6823373. The next prime is 6823391. The reversal of 6823381 is 1833286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5803281 + 1020100 = 2409^2 + 1010^2 .

It is a cyclic number.

It is not a de Polignac number, because 6823381 - 2³ = 6823373 is a prime.

It is a super-2 number, since 2×6823381² = 93117056542322, 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 (6823351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117616 + ... + 117673.

It is an arithmetic number, because the mean of its divisors is an integer number (1764675).

Almost surely, 2^6823381 is an apocalyptic number.

It is an amenable number.

6823381 is a deficient number, since it is larger than the sum of its proper divisors (235319).

6823381 is a wasteful number, since it uses less digits than its factorization.

6823381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235318.

The product of its digits is 6912, while the sum is 31.

The square root of 6823381 is about 2612.1602171383. The cubic root of 6823381 is about 189.6705370696.

The spelling of 6823381 in words is "six million, eight hundred twenty-three thousand, three hundred eighty-one".