6905705 has 4 divisors (see below), whose sum is σ = 8286852. Its totient is φ = 5524560.

The previous prime is 6905699. The next prime is 6905707. The reversal of 6905705 is 5075096.

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 1236544 + 5669161 = 1112^2 + 2381^2 .

It is not a de Polignac number, because 6905705 - 2⁸ = 6905449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6905707) 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, 690566 + ... + 690575.

It is an arithmetic number, because the mean of its divisors is an integer number (2071713).

Almost surely, 2^6905705 is an apocalyptic number.

It is an amenable number.

6905705 is a deficient number, since it is larger than the sum of its proper divisors (1381147).

6905705 is a wasteful number, since it uses less digits than its factorization.

6905705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381146.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 6905705 is about 2627.8708111321. The cubic root of 6905705 is about 190.4302806070.

Subtracting from 6905705 its reverse (5075096), we obtain a square (1830609 = 1353²).

The spelling of 6905705 in words is "six million, nine hundred five thousand, seven hundred five".