823696 has 10 divisors (see below), whose sum is σ = 1595942. Its totient is φ = 411840.

The previous prime is 823679. The next prime is 823703. The reversal of 823696 is 696328.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 215296 = 780^2 + 464^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

823696 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 as a sum of consecutive naturals, namely, 25725 + ... + 25756.

2⁸²³⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

823696 is a deficient number, since it is larger than the sum of its proper divisors (772246).

823696 is a wasteful number, since it uses less digits than its factorization.

823696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51489 (or 51483 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 823696 is about 907.5769939790. The cubic root of 823696 is about 93.7394322903.

The spelling of 823696 in words is "eight hundred twenty-three thousand, six hundred ninety-six".