706539 has 4 divisors (see below), whose sum is σ = 942056. Its totient is φ = 471024.

The previous prime is 706523. The next prime is 706547. The reversal of 706539 is 935607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935607 = 3 ⋅311869.

It is not a de Polignac number, because 706539 - 2⁴ = 706523 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 706539.

It is not an unprimeable number, because it can be changed into a prime (706039) 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, 117754 + ... + 117759.

It is an arithmetic number, because the mean of its divisors is an integer number (235514).

2⁷⁰⁶⁵³⁹ is an apocalyptic number.

706539 is a deficient number, since it is larger than the sum of its proper divisors (235517).

706539 is a wasteful number, since it uses less digits than its factorization.

706539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235516.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 706539 is about 840.5587427420. The cubic root of 706539 is about 89.0660201133.

The spelling of 706539 in words is "seven hundred six thousand, five hundred thirty-nine".