1006823 has 4 divisors (see below), whose sum is σ = 1010688. Its totient is φ = 1002960.

The previous prime is 1006799. The next prime is 1006847. The reversal of 1006823 is 3286001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3286001 = 1087 ⋅3023.

It is an interprime number because it is at equal distance from previous prime (1006799) and next prime (1006847).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1006795 and 1006804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006853) 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, 1511 + ... + 2072.

It is an arithmetic number, because the mean of its divisors is an integer number (252672).

2^1006823 is an apocalyptic number.

1006823 is a deficient number, since it is larger than the sum of its proper divisors (3865).

1006823 is an equidigital number, since it uses as much as digits as its factorization.

1006823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1006823 is about 1003.4057006017. The cubic root of 1006823 is about 100.2269180259.

The spelling of 1006823 in words is "one million, six thousand, eight hundred twenty-three".