6805849 has 4 divisors (see below), whose sum is σ = 6825700. Its totient is φ = 6786000.

The previous prime is 6805829. The next prime is 6805853. The reversal of 6805849 is 9485086.

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 4347225 + 2458624 = 2085^2 + 1568^2 .

It is a cyclic number.

It is not a de Polignac number, because 6805849 - 2¹¹ = 6803801 is a prime.

It is a super-2 number, since 2×6805849² = 92639161221602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6805829) 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, 9402 + ... + 10099.

It is an arithmetic number, because the mean of its divisors is an integer number (1706425).

Almost surely, 2^6805849 is an apocalyptic number.

It is an amenable number.

6805849 is a deficient number, since it is larger than the sum of its proper divisors (19851).

6805849 is a wasteful number, since it uses less digits than its factorization.

6805849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19850.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 6805849 is about 2608.8022155771. The cubic root of 6805849 is about 189.5079512030.

The spelling of 6805849 in words is "six million, eight hundred five thousand, eight hundred forty-nine".