706505 has 4 divisors (see below), whose sum is σ = 847812. Its totient is φ = 565200.

The previous prime is 706499. The next prime is 706507. The reversal of 706505 is 505607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 524176 + 182329 = 724^2 + 427^2 .

It is a de Polignac number, because none of the positive numbers 2^k-706505 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 706505.

It is not an unprimeable number, because it can be changed into a prime (706507) 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, 70646 + ... + 70655.

It is an arithmetic number, because the mean of its divisors is an integer number (211953).

2⁷⁰⁶⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

706505 is a deficient number, since it is larger than the sum of its proper divisors (141307).

706505 is a wasteful number, since it uses less digits than its factorization.

706505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141306.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 706505 is about 840.5385178563. The cubic root of 706505 is about 89.0645914149.

The spelling of 706505 in words is "seven hundred six thousand, five hundred five".