806336786 has 4 divisors (see below), whose sum is σ = 1209505182. Its totient is φ = 403168392.

The previous prime is 806336723. The next prime is 806336803. The reversal of 806336786 is 687633608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 805481161 + 855625 = 28381^2 + 925^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 806336786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201584195 + ... + 201584198.

Almost surely, 2^806336786 is an apocalyptic number.

806336786 is a deficient number, since it is larger than the sum of its proper divisors (403168396).

806336786 is a wasteful number, since it uses less digits than its factorization.

806336786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403168395.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 806336786 is about 28396.0699041258. The cubic root of 806336786 is about 930.7623863710.

The spelling of 806336786 in words is "eight hundred six million, three hundred thirty-six thousand, seven hundred eighty-six".