706423 has 4 divisors (see below), whose sum is σ = 709128. Its totient is φ = 703720.

The previous prime is 706417. The next prime is 706427. The reversal of 706423 is 324607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324607 = 43 ⋅7549.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-706423 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 706394 and 706403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913 + ... + 1498.

It is an arithmetic number, because the mean of its divisors is an integer number (177282).

2⁷⁰⁶⁴²³ is an apocalyptic number.

706423 is a deficient number, since it is larger than the sum of its proper divisors (2705).

706423 is a wasteful number, since it uses less digits than its factorization.

706423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 706423 is about 840.4897381884. The cubic root of 706423 is about 89.0611455421.

The spelling of 706423 in words is "seven hundred six thousand, four hundred twenty-three".