823706 has 12 divisors (see below), whose sum is σ = 1338462. Its totient is φ = 380016.

The previous prime is 823703. The next prime is 823709. The reversal of 823706 is 607328.

It is an interprime number because it is at equal distance from previous prime (823703) and next prime (823709).

It can be written as a sum of positive squares in 3 ways, for example, as 625681 + 198025 = 791^2 + 445^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (823703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 881 + ... + 1556.

2⁸²³⁷⁰⁶ is an apocalyptic number.

823706 is a deficient number, since it is larger than the sum of its proper divisors (514756).

823706 is a wasteful number, since it uses less digits than its factorization.

823706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465 (or 2452 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 823706 is about 907.5825031368. The cubic root of 823706 is about 93.7398116336.

The spelling of 823706 in words is "eight hundred twenty-three thousand, seven hundred six".