6857705 has 4 divisors (see below), whose sum is σ = 8229252. Its totient is φ = 5486160.

The previous prime is 6857699. The next prime is 6857707. The reversal of 6857705 is 5077586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4177936 + 2679769 = 2044^2 + 1637^2 .

It is not a de Polignac number, because 6857705 - 2⁸ = 6857449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6857707) 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, 685766 + ... + 685775.

It is an arithmetic number, because the mean of its divisors is an integer number (2057313).

Almost surely, 2^6857705 is an apocalyptic number.

It is an amenable number.

6857705 is a deficient number, since it is larger than the sum of its proper divisors (1371547).

6857705 is a wasteful number, since it uses less digits than its factorization.

6857705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371546.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 6857705 is about 2618.7220165569. The cubic root of 6857705 is about 189.9880417220.

The spelling of 6857705 in words is "six million, eight hundred fifty-seven thousand, seven hundred five".