705723 has 4 divisors (see below), whose sum is σ = 940968. Its totient is φ = 470480.

The previous prime is 705713. The next prime is 705737. The reversal of 705723 is 327507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327507 = 3 ⋅109169.

It is a cyclic number.

It is not a de Polignac number, because 705723 - 2¹² = 701627 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 705693 and 705702.

It is not an unprimeable number, because it can be changed into a prime (705713) 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 3 ways as a sum of consecutive naturals, for example, 117618 + ... + 117623.

It is an arithmetic number, because the mean of its divisors is an integer number (235242).

2⁷⁰⁵⁷²³ is an apocalyptic number.

705723 is a deficient number, since it is larger than the sum of its proper divisors (235245).

705723 is a wasteful number, since it uses less digits than its factorization.

705723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235244.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 705723 is about 840.0732110953. The cubic root of 705723 is about 89.0317186949.

The spelling of 705723 in words is "seven hundred five thousand, seven hundred twenty-three".