6846921 has 6 divisors (see below), whose sum is σ = 9890010. Its totient is φ = 4564608.

The previous prime is 6846907. The next prime is 6846923. The reversal of 6846921 is 1296486.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 112896 = 2595^2 + 336^2 .

It is not a de Polignac number, because 6846921 - 2⁹ = 6846409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6846923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380376 + ... + 380393.

It is an arithmetic number, because the mean of its divisors is an integer number (1648335).

Almost surely, 2^6846921 is an apocalyptic number.

It is an amenable number.

6846921 is a deficient number, since it is larger than the sum of its proper divisors (3043089).

6846921 is a wasteful number, since it uses less digits than its factorization.

6846921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760775 (or 760772 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 6846921 is about 2616.6621868327. The cubic root of 6846921 is about 189.8884016852. Note that the first 3 decimals are identical.

The spelling of 6846921 in words is "six million, eight hundred forty-six thousand, nine hundred twenty-one".