1087823 has 4 divisors (see below), whose sum is σ = 1186728. Its totient is φ = 988920.

The previous prime is 1087817. The next prime is 1087829. The reversal of 1087823 is 3287801.

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

It is an interprime number because it is at equal distance from previous prime (1087817) and next prime (1087829).

It is a cyclic number.

It is not a de Polignac number, because 1087823 - 2¹⁴ = 1071439 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 (1087829) 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, 49436 + ... + 49457.

It is an arithmetic number, because the mean of its divisors is an integer number (296682).

2^1087823 is an apocalyptic number.

1087823 is a deficient number, since it is larger than the sum of its proper divisors (98905).

1087823 is an equidigital number, since it uses as much as digits as its factorization.

1087823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98904.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1087823 is about 1042.9875358795. The cubic root of 1087823 is about 102.8456859116.

It can be divided in two parts, 10878 and 23, that added together give a palindrome (10901).

The spelling of 1087823 in words is "one million, eighty-seven thousand, eight hundred twenty-three".