82911866 has 8 divisors (see below), whose sum is σ = 125765460. Its totient is φ = 40990048.

The previous prime is 82911853. The next prime is 82911889. The reversal of 82911866 is 66811928.

It can be written as a sum of positive squares in 2 ways, for example, as 64464841 + 18447025 = 8029^2 + 4295^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232721 + ... + 233076.

Almost surely, 2^82911866 is an apocalyptic number.

82911866 is a deficient number, since it is larger than the sum of its proper divisors (42853594).

82911866 is a wasteful number, since it uses less digits than its factorization.

82911866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465888.

The product of its digits is 41472, while the sum is 41.

The square root of 82911866 is about 9105.5953127733. The cubic root of 82911866 is about 436.0526161846.

The spelling of 82911866 in words is "eighty-two million, nine hundred eleven thousand, eight hundred sixty-six".