6849861 has 16 divisors (see below), whose sum is σ = 10180800. Its totient is φ = 4071168.

The previous prime is 6849851. The next prime is 6849877. The reversal of 6849861 is 1689486.

It is not a de Polignac number, because 6849861 - 2⁶ = 6849797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2566 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (636300).

Almost surely, 2^6849861 is an apocalyptic number.

It is an amenable number.

6849861 is a deficient number, since it is larger than the sum of its proper divisors (3330939).

6849861 is a wasteful number, since it uses less digits than its factorization.

6849861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7108.

The product of its digits is 82944, while the sum is 42.

The square root of 6849861 is about 2617.2239109408. The cubic root of 6849861 is about 189.9155765284.

The spelling of 6849861 in words is "six million, eight hundred forty-nine thousand, eight hundred sixty-one".