6805745 has 4 divisors (see below), whose sum is σ = 8166900. Its totient is φ = 5444592.

The previous prime is 6805727. The next prime is 6805753. The reversal of 6805745 is 5475086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5475086 = 2 ⋅2737543.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 2122849 = 2164^2 + 1457^2 .

It is a cyclic number.

It is not a de Polignac number, because 6805745 - 2⁶ = 6805681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680570 + ... + 680579.

It is an arithmetic number, because the mean of its divisors is an integer number (2041725).

Almost surely, 2^6805745 is an apocalyptic number.

It is an amenable number.

6805745 is a deficient number, since it is larger than the sum of its proper divisors (1361155).

6805745 is a wasteful number, since it uses less digits than its factorization.

6805745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361154.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 6805745 is about 2608.7822829819. The cubic root of 6805745 is about 189.5069859094.

The spelling of 6805745 in words is "six million, eight hundred five thousand, seven hundred forty-five".