83856366 has 48 divisors (see below), whose sum is σ = 202445568. Its totient is φ = 24867600.

The previous prime is 83856323. The next prime is 83856373. The reversal of 83856366 is 66365838.

83856366 is a `hidden beast` number, since 8 + 3 + 8 + 5 + 636 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4801 + ... + 13811.

It is an arithmetic number, because the mean of its divisors is an integer number (4217616).

Almost surely, 2^83856366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83856366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101222784).

83856366 is an abundant number, since it is smaller than the sum of its proper divisors (118589202).

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

83856366 is a wasteful number, since it uses less digits than its factorization.

83856366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077 (or 9074 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 83856366 is about 9157.3121602357. The cubic root of 83856366 is about 437.7021494112.

The spelling of 83856366 in words is "eighty-three million, eight hundred fifty-six thousand, three hundred sixty-six".