85197136 has 20 divisors (see below), whose sum is σ = 166706964. Its totient is φ = 42176000.

The previous prime is 85197127. The next prime is 85197163. The reversal of 85197136 is 63179158.

It can be written as a sum of positive squares in 2 ways, for example, as 47004736 + 38192400 = 6856^2 + 6180^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24745 + ... + 27976.

Almost surely, 2^85197136 is an apocalyptic number.

It is an amenable number.

85197136 is a deficient number, since it is larger than the sum of its proper divisors (81509828).

85197136 is a wasteful number, since it uses less digits than its factorization.

85197136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52830 (or 52824 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 85197136 is about 9230.2294662701. The cubic root of 85197136 is about 440.0226159174.

The spelling of 85197136 in words is "eighty-five million, one hundred ninety-seven thousand, one hundred thirty-six".