823827 has 4 divisors (see below), whose sum is σ = 1098440. Its totient is φ = 549216.

The previous prime is 823819. The next prime is 823829. The reversal of 823827 is 728328.

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

It is not a de Polignac number, because 823827 - 2³ = 823819 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 823794 and 823803.

It is not an unprimeable number, because it can be changed into a prime (823829) 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, 137302 + ... + 137307.

It is an arithmetic number, because the mean of its divisors is an integer number (274610).

2⁸²³⁸²⁷ is an apocalyptic number.

823827 is a deficient number, since it is larger than the sum of its proper divisors (274613).

823827 is a wasteful number, since it uses less digits than its factorization.

823827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274612.

The product of its digits is 5376, while the sum is 30.

The square root of 823827 is about 907.6491612953. The cubic root of 823827 is about 93.7444014435.

The spelling of 823827 in words is "eight hundred twenty-three thousand, eight hundred twenty-seven".