6856705 has 8 divisors (see below), whose sum is σ = 8363304. Its totient is φ = 5395200.

The previous prime is 6856697. The next prime is 6856723. The reversal of 6856705 is 5076586.

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 6355441 = 708^2 + 2521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6856705 - 2³ = 6856697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10936 + ... + 11545.

It is an arithmetic number, because the mean of its divisors is an integer number (1045413).

It is a Proth number, since it is equal to 837 ⋅ 2¹³ + 1 and 837 < 2¹³.

Almost surely, 2^6856705 is an apocalyptic number.

It is an amenable number.

6856705 is a deficient number, since it is larger than the sum of its proper divisors (1506599).

6856705 is a wasteful number, since it uses less digits than its factorization.

6856705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22547.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 6856705 is about 2618.5310767680. The cubic root of 6856705 is about 189.9788065003.

The spelling of 6856705 in words is "six million, eight hundred fifty-six thousand, seven hundred five".