820575922 has 8 divisors (see below), whose sum is σ = 1284379776. Its totient is φ = 392449332.

The previous prime is 820575913. The next prime is 820575949. The reversal of 820575922 is 229575028.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8919258 + ... + 8919349.

It is an arithmetic number, because the mean of its divisors is an integer number (160547472).

Almost surely, 2^820575922 is an apocalyptic number.

820575922 is a deficient number, since it is larger than the sum of its proper divisors (463803854).

820575922 is a wasteful number, since it uses less digits than its factorization.

820575922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17838632.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 820575922 is about 28645.6963957939. The cubic root of 820575922 is about 936.2092400272.

The spelling of 820575922 in words is "eight hundred twenty million, five hundred seventy-five thousand, nine hundred twenty-two".