820790113 has 8 divisors (see below), whose sum is σ = 964285056. Its totient is φ = 688774800.

The previous prime is 820790099. The next prime is 820790183. The reversal of 820790113 is 311097028.

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

It is a cyclic number.

It is not a de Polignac number, because 820790113 - 2⁹ = 820789601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820790183) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2869753 + ... + 2870038.

It is an arithmetic number, because the mean of its divisors is an integer number (120535632).

Almost surely, 2^820790113 is an apocalyptic number.

It is an amenable number.

820790113 is a deficient number, since it is larger than the sum of its proper divisors (143494943).

820790113 is a wasteful number, since it uses less digits than its factorization.

820790113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739815.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 820790113 is about 28649.4347762744. The cubic root of 820790113 is about 936.2906910110.

The spelling of 820790113 in words is "eight hundred twenty million, seven hundred ninety thousand, one hundred thirteen".