827842566 has 8 divisors (see below), whose sum is σ = 1655685144. Its totient is φ = 275947520.

The previous prime is 827842513. The next prime is 827842571. The reversal of 827842566 is 665248728.

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

827842566 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 68986875 + ... + 68986886.

It is an arithmetic number, because the mean of its divisors is an integer number (206960643).

Almost surely, 2^827842566 is an apocalyptic number.

827842566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

827842566 is a wasteful number, since it uses less digits than its factorization.

827842566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137973766.

The product of its digits is 1290240, while the sum is 48.

The square root of 827842566 is about 28772.2534049733. The cubic root of 827842566 is about 938.9646689008.

The spelling of 827842566 in words is "eight hundred twenty-seven million, eight hundred forty-two thousand, five hundred sixty-six".