85987975 has 12 divisors (see below), whose sum is σ = 106743664. Its totient is φ = 68713920.

The previous prime is 85987969. The next prime is 85987991. The reversal of 85987975 is 57978958.

It is not a de Polignac number, because 85987975 - 2¹¹ = 85985927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34987 + ... + 37363.

Almost surely, 2^85987975 is an apocalyptic number.

85987975 is a deficient number, since it is larger than the sum of its proper divisors (20755689).

85987975 is a wasteful number, since it uses less digits than its factorization.

85987975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834 (or 3829 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 58.

The square root of 85987975 is about 9272.9701282814. The cubic root of 85987975 is about 441.3799222583.

The spelling of 85987975 in words is "eighty-five million, nine hundred eighty-seven thousand, nine hundred seventy-five".