85704543 has 12 divisors (see below), whose sum is σ = 127141768. Its totient is φ = 55591920.

The previous prime is 85704529. The next prime is 85704571. The reversal of 85704543 is 34540758.

85704543 is a `hidden beast` number, since 8 + 570 + 45 + 43 = 666.

It is not a de Polignac number, because 85704543 - 2¹⁶ = 85639007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85704498 and 85704507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85704643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 128353 + ... + 129018.

Almost surely, 2^85704543 is an apocalyptic number.

85704543 is a deficient number, since it is larger than the sum of its proper divisors (41437225).

85704543 is a wasteful number, since it uses less digits than its factorization.

85704543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257414 (or 257411 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 85704543 is about 9257.6748160648. The cubic root of 85704543 is about 440.8944322872.

The spelling of 85704543 in words is "eighty-five million, seven hundred four thousand, five hundred forty-three".