6856205 has 6 divisors (see below), whose sum is σ = 8234478. Its totient is φ = 5480280.

The previous prime is 6856189. The next prime is 6856229. The reversal of 6856205 is 5026586.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5484964 + 1371241 = 2342^2 + 1171^2 .

It is not a de Polignac number, because 6856205 - 2⁴ = 6856189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5270 + ... + 6440.

It is an arithmetic number, because the mean of its divisors is an integer number (1372413).

Almost surely, 2^6856205 is an apocalyptic number.

It is an amenable number.

6856205 is a deficient number, since it is larger than the sum of its proper divisors (1378273).

6856205 is an frugal number, since it uses more digits than its factorization.

6856205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 6856205 is about 2618.4356016523. The cubic root of 6856205 is about 189.9741885528.

The spelling of 6856205 in words is "six million, eight hundred fifty-six thousand, two hundred five".