705611 has 4 divisors (see below), whose sum is σ = 720672. Its totient is φ = 690552.

The previous prime is 705559. The next prime is 705613. The reversal of 705611 is 116507.

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

It is a cyclic number.

It is not a de Polignac number, because 705611 - 2¹⁸ = 443467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705613) 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, 7460 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (180168).

2⁷⁰⁵⁶¹¹ is an apocalyptic number.

705611 is a deficient number, since it is larger than the sum of its proper divisors (15061).

705611 is a wasteful number, since it uses less digits than its factorization.

705611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15060.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 705611 is about 840.0065475935. The cubic root of 705611 is about 89.0270085938.

The spelling of 705611 in words is "seven hundred five thousand, six hundred eleven".