827863 has 4 divisors (see below), whose sum is σ = 856440. Its totient is φ = 799288.

The previous prime is 827857. The next prime is 827867. The reversal of 827863 is 368728.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-827863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827867) 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, 14245 + ... + 14302.

It is an arithmetic number, because the mean of its divisors is an integer number (214110).

2⁸²⁷⁸⁶³ is an apocalyptic number.

827863 is a deficient number, since it is larger than the sum of its proper divisors (28577).

827863 is a wasteful number, since it uses less digits than its factorization.

827863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28576.

The product of its digits is 16128, while the sum is 34.

The square root of 827863 is about 909.8697709013. The cubic root of 827863 is about 93.8972394462.

The spelling of 827863 in words is "eight hundred twenty-seven thousand, eight hundred sixty-three".