820680224806 has 8 divisors (see below), whose sum is σ = 1325714209344. Its totient is φ = 378775488360.

The previous prime is 820680224783. The next prime is 820680224827. The reversal of 820680224806 is 608422086028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15782311990 + ... + 15782312041.

It is an arithmetic number, because the mean of its divisors is an integer number (165714276168).

Almost surely, 2^820680224806 is an apocalyptic number.

820680224806 is a deficient number, since it is larger than the sum of its proper divisors (505033984538).

820680224806 is a wasteful number, since it uses less digits than its factorization.

820680224806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31564624046.

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 820680224806 in words is "eight hundred twenty billion, six hundred eighty million, two hundred twenty-four thousand, eight hundred six".