827705 has 4 divisors (see below), whose sum is σ = 993252. Its totient is φ = 662160.

The previous prime is 827699. The next prime is 827719. The reversal of 827705 is 507728.

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 153664 + 674041 = 392^2 + 821^2 .

It is not a de Polignac number, because 827705 - 2¹⁰ = 826681 is a prime.

It is an Ulam number.

It is a Duffinian 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, 82766 + ... + 82775.

It is an arithmetic number, because the mean of its divisors is an integer number (248313).

2⁸²⁷⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

827705 is a deficient number, since it is larger than the sum of its proper divisors (165547).

827705 is a wasteful number, since it uses less digits than its factorization.

827705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165546.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 827705 is about 909.7829411459. The cubic root of 827705 is about 93.8912655481.

The spelling of 827705 in words is "eight hundred twenty-seven thousand, seven hundred five".