83685543 has 32 divisors (see below), whose sum is σ = 121305600. Its totient is φ = 51127296.

The previous prime is 83685533. The next prime is 83685571. The reversal of 83685543 is 34558638.

It is not a de Polignac number, because 83685543 - 2¹⁸ = 83423399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83685495 and 83685504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83685533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467428 + ... + 467606.

It is an arithmetic number, because the mean of its divisors is an integer number (3790800).

Almost surely, 2^83685543 is an apocalyptic number.

83685543 is a deficient number, since it is larger than the sum of its proper divisors (37620057).

83685543 is a wasteful number, since it uses less digits than its factorization.

83685543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 345600, while the sum is 42.

The square root of 83685543 is about 9147.9802688900. The cubic root of 83685543 is about 437.4047344139.

The spelling of 83685543 in words is "eighty-three million, six hundred eighty-five thousand, five hundred forty-three".