829705 has 4 divisors (see below), whose sum is σ = 995652. Its totient is φ = 663760.

The previous prime is 829693. The next prime is 829709. The reversal of 829705 is 507928.

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 227529 + 602176 = 477^2 + 776^2 .

It is not a de Polignac number, because 829705 - 2⁹ = 829193 is a prime.

It is a Smith number, since the sum of its digits (31) 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 not an unprimeable number, because it can be changed into a prime (829709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82966 + ... + 82975.

It is an arithmetic number, because the mean of its divisors is an integer number (248913).

2⁸²⁹⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

829705 is a deficient number, since it is larger than the sum of its proper divisors (165947).

829705 is a wasteful number, since it uses less digits than its factorization.

829705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165946.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 829705 is about 910.8814412425. The cubic root of 829705 is about 93.9668284947.

The spelling of 829705 in words is "eight hundred twenty-nine thousand, seven hundred five".