823887 has 12 divisors (see below), whose sum is σ = 1228864. Its totient is φ = 531360.

The previous prime is 823877. The next prime is 823903. The reversal of 823887 is 788328.

823887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 823887 - 2⁷ = 823759 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 (823877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1198 + ... + 1755.

2⁸²³⁸⁸⁷ is an apocalyptic number.

823887 is a deficient number, since it is larger than the sum of its proper divisors (404977).

823887 is a wasteful number, since it uses less digits than its factorization.

823887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990 (or 2987 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 823887 is about 907.6822131121. The cubic root of 823887 is about 93.7466772156.

It can be divided in two parts, 82 and 3887, that added together give a square (3969 = 63²).

The spelling of 823887 in words is "eight hundred twenty-three thousand, eight hundred eighty-seven".