85636849 has 4 divisors (see below), whose sum is σ = 88399360. Its totient is φ = 82874340.

The previous prime is 85636847. The next prime is 85636861. The reversal of 85636849 is 94863658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85636849 - 2¹ = 85636847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85636841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381209 + ... + 1381270.

It is an arithmetic number, because the mean of its divisors is an integer number (22099840).

Almost surely, 2^85636849 is an apocalyptic number.

It is an amenable number.

85636849 is a deficient number, since it is larger than the sum of its proper divisors (2762511).

85636849 is a wasteful number, since it uses less digits than its factorization.

85636849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762510.

The product of its digits is 1244160, while the sum is 49.

The square root of 85636849 is about 9254.0179922021. The cubic root of 85636849 is about 440.7783210984.

The spelling of 85636849 in words is "eighty-five million, six hundred thirty-six thousand, eight hundred forty-nine".