6803945 has 4 divisors (see below), whose sum is σ = 8164740. Its totient is φ = 5443152.

The previous prime is 6803941. The next prime is 6803947. The reversal of 6803945 is 5493086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5493086 = 2 ⋅2746543.

It can be written as a sum of positive squares in 2 ways, for example, as 1857769 + 4946176 = 1363^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 6803945 - 2² = 6803941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6803941) 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, 680390 + ... + 680399.

It is an arithmetic number, because the mean of its divisors is an integer number (2041185).

Almost surely, 2^6803945 is an apocalyptic number.

It is an amenable number.

6803945 is a deficient number, since it is larger than the sum of its proper divisors (1360795).

6803945 is a wasteful number, since it uses less digits than its factorization.

6803945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360794.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 6803945 is about 2608.4372716245. The cubic root of 6803945 is about 189.4902773466.

The spelling of 6803945 in words is "six million, eight hundred three thousand, nine hundred forty-five".