820626808 has 16 divisors (see below), whose sum is σ = 1576204560. Its totient is φ = 400305600.

The previous prime is 820626803. The next prime is 820626841. The reversal of 820626808 is 808626028.

820626808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820626803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250628 + ... + 1251283.

It is an arithmetic number, because the mean of its divisors is an integer number (98512785).

Almost surely, 2^820626808 is an apocalyptic number.

It is an amenable number.

820626808 is a deficient number, since it is larger than the sum of its proper divisors (755577752).

820626808 is a wasteful number, since it uses less digits than its factorization.

820626808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501958 (or 2501954 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 820626808 is about 28646.5845782704. The cubic root of 820626808 is about 936.2285918659.

The spelling of 820626808 in words is "eight hundred twenty million, six hundred twenty-six thousand, eight hundred eight".