806705 has 4 divisors (see below), whose sum is σ = 968052. Its totient is φ = 645360.

The previous prime is 806671. The next prime is 806719. The reversal of 806705 is 507608.

806705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 185761 + 620944 = 431^2 + 788^2 .

It is not a de Polignac number, because 806705 - 2¹² = 802609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80666 + ... + 80675.

It is an arithmetic number, because the mean of its divisors is an integer number (242013).

2⁸⁰⁶⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

806705 is a deficient number, since it is larger than the sum of its proper divisors (161347).

806705 is a wasteful number, since it uses less digits than its factorization.

806705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161346.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 806705 is about 898.1675790185. The cubic root of 806705 is about 93.0904042477.

The spelling of 806705 in words is "eight hundred six thousand, seven hundred five".