705771 has 12 divisors (see below), whose sum is σ = 1112280. Its totient is φ = 427680.

The previous prime is 705769. The next prime is 705779. The reversal of 705771 is 177507.

It is not a de Polignac number, because 705771 - 2¹ = 705769 is a prime.

It is a super-2 number, since 2×705771² = 996225408882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

705771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (705779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3466 + ... + 3663.

It is an arithmetic number, because the mean of its divisors is an integer number (92690).

2⁷⁰⁵⁷⁷¹ is an apocalyptic number.

705771 is a deficient number, since it is larger than the sum of its proper divisors (406509).

705771 is a wasteful number, since it uses less digits than its factorization.

705771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7146 (or 7143 counting only the distinct ones).

The product of its (nonzero) digits is 1715, while the sum is 27.

The square root of 705771 is about 840.1017795482. The cubic root of 705771 is about 89.0337371571.

The spelling of 705771 in words is "seven hundred five thousand, seven hundred seventy-one".