83685807563 has 4 divisors (see below), whose sum is σ = 83686440288. Its totient is φ = 83685174840.

The previous prime is 83685807551. The next prime is 83685807599. The reversal of 83685807563 is 36570858638.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 83685807563 - 2⁴ = 83685807547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83685807523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33908 + ... + 410513.

It is an arithmetic number, because the mean of its divisors is an integer number (20921610072).

Almost surely, 2^83685807563 is an apocalyptic number.

83685807563 is a deficient number, since it is larger than the sum of its proper divisors (632725).

83685807563 is a wasteful number, since it uses less digits than its factorization.

83685807563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632724.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 83685807563 in words is "eighty-three billion, six hundred eighty-five million, eight hundred seven thousand, five hundred sixty-three".