6855005 has 4 divisors (see below), whose sum is σ = 8226012. Its totient is φ = 5484000.

The previous prime is 6854993. The next prime is 6855007. The reversal of 6855005 is 5005586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5005586 = 2 ⋅2502793.

It can be written as a sum of positive squares in 2 ways, for example, as 1104601 + 5750404 = 1051^2 + 2398^2 .

It is not a de Polignac number, because 6855005 - 2⁶ = 6854941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6855007) 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, 685496 + ... + 685505.

It is an arithmetic number, because the mean of its divisors is an integer number (2056503).

Almost surely, 2^6855005 is an apocalyptic number.

It is an amenable number.

6855005 is a deficient number, since it is larger than the sum of its proper divisors (1371007).

6855005 is a wasteful number, since it uses less digits than its factorization.

6855005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371006.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 6855005 is about 2618.2064471695. The cubic root of 6855005 is about 189.9631045626.

The spelling of 6855005 in words is "six million, eight hundred fifty-five thousand, five".