705685 has 8 divisors (see below), whose sum is σ = 855000. Its totient is φ = 559104.

The previous prime is 705643. The next prime is 705689. The reversal of 705685 is 586507.

It can be written as a sum of positive squares in 4 ways, for example, as 1764 + 703921 = 42^2 + 839^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 705685 - 2¹⁹ = 181397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (106875).

2⁷⁰⁵⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

705685 is a deficient number, since it is larger than the sum of its proper divisors (149315).

705685 is a wasteful number, since it uses less digits than its factorization.

705685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 705685 is about 840.0505937145. The cubic root of 705685 is about 89.0301206807.

The spelling of 705685 in words is "seven hundred five thousand, six hundred eighty-five".