820696 has 8 divisors (see below), whose sum is σ = 1538820. Its totient is φ = 410344.

The previous prime is 820691. The next prime is 820711. The reversal of 820696 is 696028.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820691) by changing a digit.

820696 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51286 + ... + 51301.

2⁸²⁰⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

820696 is a deficient number, since it is larger than the sum of its proper divisors (718124).

820696 is a wasteful number, since it uses less digits than its factorization.

820696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102593 (or 102589 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 820696 is about 905.9227340121. The cubic root of 820696 is about 93.6254904155.

The spelling of 820696 in words is "eight hundred twenty thousand, six hundred ninety-six".