83563856 has 20 divisors (see below), whose sum is σ = 162132852. Its totient is φ = 41723136.

The previous prime is 83563849. The next prime is 83563859. The reversal of 83563856 is 65836538.

It can be written as a sum of positive squares in 2 ways, for example, as 34339600 + 49224256 = 5860^2 + 7016^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83563859) by changing a digit.

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, 9476 + ... + 16028.

Almost surely, 2^83563856 is an apocalyptic number.

It is an amenable number.

83563856 is a deficient number, since it is larger than the sum of its proper divisors (78568996).

83563856 is a wasteful number, since it uses less digits than its factorization.

83563856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7358 (or 7352 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 83563856 is about 9141.3268183563. The cubic root of 83563856 is about 437.1926217530.

The spelling of 83563856 in words is "eighty-three million, five hundred sixty-three thousand, eight hundred fifty-six".