705423 has 8 divisors (see below), whose sum is σ = 960768. Its totient is φ = 460184.

The previous prime is 705421. The next prime is 705427. The reversal of 705423 is 324507.

It is a happy number.

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 705423 - 2¹ = 705421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 705423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705421) 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 7 ways as a sum of consecutive naturals, for example, 2361 + ... + 2642.

It is an arithmetic number, because the mean of its divisors is an integer number (120096).

2⁷⁰⁵⁴²³ is an apocalyptic number.

705423 is a deficient number, since it is larger than the sum of its proper divisors (255345).

705423 is a wasteful number, since it uses less digits than its factorization.

705423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 705423 is about 839.8946362491. The cubic root of 705423 is about 89.0191012320.

It can be divided in two parts, 705 and 423, that added together give a triangular number (1128 = T₄₇).

The spelling of 705423 in words is "seven hundred five thousand, four hundred twenty-three".