6831861 has 4 divisors (see below), whose sum is σ = 9109152. Its totient is φ = 4554572.

The previous prime is 6831857. The next prime is 6831863. The reversal of 6831861 is 1681386.

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 6831861 - 2² = 6831857 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6831863) 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, 1138641 + ... + 1138646.

It is an arithmetic number, because the mean of its divisors is an integer number (2277288).

Almost surely, 2^6831861 is an apocalyptic number.

It is an amenable number.

6831861 is a deficient number, since it is larger than the sum of its proper divisors (2277291).

6831861 is a wasteful number, since it uses less digits than its factorization.

6831861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277290.

The product of its digits is 6912, while the sum is 33.

The square root of 6831861 is about 2613.7828907543. The cubic root of 6831861 is about 189.7490778162.

The spelling of 6831861 in words is "six million, eight hundred thirty-one thousand, eight hundred sixty-one".