705861 has 16 divisors (see below), whose sum is σ = 1126720. Its totient is φ = 434160.

The previous prime is 705841. The next prime is 705863. The reversal of 705861 is 168507.

It is not a de Polignac number, because 705861 - 2⁵ = 705829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

705861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (70420).

2⁷⁰⁵⁸⁶¹ is an apocalyptic number.

It is an amenable number.

705861 is a deficient number, since it is larger than the sum of its proper divisors (420859).

705861 is a wasteful number, since it uses less digits than its factorization.

705861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 705861 is about 840.1553427789. The cubic root of 705861 is about 89.0375215270.

The spelling of 705861 in words is "seven hundred five thousand, eight hundred sixty-one".