85140736 has 36 divisors (see below), whose sum is σ = 172039392. Its totient is φ = 42046976.

The previous prime is 85140701. The next prime is 85140761. The reversal of 85140736 is 63704158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19245 + ... + 23251.

It is an arithmetic number, because the mean of its divisors is an integer number (4778872).

Almost surely, 2^85140736 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 85140736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86019696).

85140736 is an abundant number, since it is smaller than the sum of its proper divisors (86898656).

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

85140736 is an equidigital number, since it uses as much as digits as its factorization.

85140736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 85140736 is about 9227.1737818251. The cubic root of 85140736 is about 439.9254970274.

The spelling of 85140736 in words is "eighty-five million, one hundred forty thousand, seven hundred thirty-six".