820834568 has 32 divisors (see below), whose sum is σ = 1576898400. Its totient is φ = 400353408.

The previous prime is 820834549. The next prime is 820834571. The reversal of 820834568 is 865438028.

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 in 7 ways as a sum of consecutive naturals, for example, 509348 + ... + 510956.

It is an arithmetic number, because the mean of its divisors is an integer number (49278075).

Almost surely, 2^820834568 is an apocalyptic number.

It is an amenable number.

820834568 is a deficient number, since it is larger than the sum of its proper divisors (756063832).

820834568 is a wasteful number, since it uses less digits than its factorization.

820834568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3137 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 820834568 is about 28650.2106100461. The cubic root of 820834568 is about 936.3075942569.

The spelling of 820834568 in words is "eight hundred twenty million, eight hundred thirty-four thousand, five hundred sixty-eight".