85985547 has 8 divisors (see below), whose sum is σ = 114716160. Its totient is φ = 57289320.

The previous prime is 85985503. The next prime is 85985563. The reversal of 85985547 is 74558958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-85985547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85985547.

It is not an unprimeable number, because it can be changed into a prime (85985567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047 + ... + 13272.

It is an arithmetic number, because the mean of its divisors is an integer number (14339520).

Almost surely, 2^85985547 is an apocalyptic number.

85985547 is a deficient number, since it is larger than the sum of its proper divisors (28730613).

85985547 is a wasteful number, since it uses less digits than its factorization.

85985547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17193.

The product of its digits is 2016000, while the sum is 51.

The square root of 85985547 is about 9272.8392092174. The cubic root of 85985547 is about 441.3757678768.

The spelling of 85985547 in words is "eighty-five million, nine hundred eighty-five thousand, five hundred forty-seven".