85084237 has 10 divisors (see below), whose sum is σ = 99261838. Its totient is φ = 72927288.

The previous prime is 85084193. The next prime is 85084247. The reversal of 85084237 is 73248058.

It can be written as a sum of positive squares in only one way, i.e., 83064996 + 2019241 = 9114^2 + 1421^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85084237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85084196 and 85084205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85084247) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15318 + ... + 20119.

Almost surely, 2^85084237 is an apocalyptic number.

It is an amenable number.

85084237 is a deficient number, since it is larger than the sum of its proper divisors (14177601).

85084237 is an frugal number, since it uses more digits than its factorization.

85084237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35465 (or 35444 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 85084237 is about 9224.1117187510. Note that the first 3 decimals coincide. The cubic root of 85084237 is about 439.8281646503.

The spelling of 85084237 in words is "eighty-five million, eighty-four thousand, two hundred thirty-seven".