85987668 has 96 divisors (see below), whose sum is σ = 227203200. Its totient is φ = 25127424.

The previous prime is 85987609. The next prime is 85987679. The reversal of 85987668 is 86678958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375378 + ... + 375606.

It is an arithmetic number, because the mean of its divisors is an integer number (2366700).

Almost surely, 2^85987668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85987668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113601600).

85987668 is an abundant number, since it is smaller than the sum of its proper divisors (141215532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85987668 is a wasteful number, since it uses less digits than its factorization.

85987668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The square root of 85987668 is about 9272.9535747786. The cubic root of 85987668 is about 441.3793969763.

The spelling of 85987668 in words is "eighty-five million, nine hundred eighty-seven thousand, six hundred sixty-eight".