823496 has 16 divisors (see below), whose sum is σ = 1564800. Its totient is φ = 406224.

The previous prime is 823489. The next prime is 823499. The reversal of 823496 is 694328.

Added to its reverse (694328) it gives a square (1517824 = 1232²).

It is not an unprimeable number, because it can be changed into a prime (823499) by changing a digit.

823496 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20 + ... + 1283.

It is an arithmetic number, because the mean of its divisors is an integer number (97800).

2⁸²³⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

823496 is a deficient number, since it is larger than the sum of its proper divisors (741304).

823496 is a wasteful number, since it uses less digits than its factorization.

823496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1384 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 823496 is about 907.4668038006. The cubic root of 823496 is about 93.7318447807.

Adding to 823496 its reverse (694328), we get a square (1517824 = 1232²).

The spelling of 823496 in words is "eight hundred twenty-three thousand, four hundred ninety-six".