85959985 has 8 divisors (see below), whose sum is σ = 105668136. Its totient is φ = 67090560.

The previous prime is 85959983. The next prime is 85959997. The reversal of 85959985 is 58995958.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 156816 + 85803169 = 396^2 + 9263^2 .

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

It is not a de Polignac number, because 85959985 - 2¹ = 85959983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85959983) 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, 209454 + ... + 209863.

It is an arithmetic number, because the mean of its divisors is an integer number (13208517).

Almost surely, 2^85959985 is an apocalyptic number.

It is an amenable number.

85959985 is a deficient number, since it is larger than the sum of its proper divisors (19708151).

85959985 is a wasteful number, since it uses less digits than its factorization.

85959985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419363.

The product of its digits is 5832000, while the sum is 58.

The square root of 85959985 is about 9271.4607802654. The cubic root of 85959985 is about 441.3320257753.

The spelling of 85959985 in words is "eighty-five million, nine hundred fifty-nine thousand, nine hundred eighty-five".