806836 has 6 divisors (see below), whose sum is σ = 1411970. Its totient is φ = 403416.

The previous prime is 806821. The next prime is 806857. The reversal of 806836 is 638608.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 176400 = 794^2 + 420^2 .

It is a junction number, because it is equal to n+sod(n) for n = 806798 and 806807.

It is a congruent number.

It is an unprimeable number.

806836 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100851 + ... + 100858.

2⁸⁰⁶⁸³⁶ is an apocalyptic number.

It is an amenable number.

806836 is a deficient number, since it is larger than the sum of its proper divisors (605134).

806836 is a wasteful number, since it uses less digits than its factorization.

806836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201713 (or 201711 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 806836 is about 898.2405023155. The cubic root of 806836 is about 93.0954429268.

The spelling of 806836 in words is "eight hundred six thousand, eight hundred thirty-six".