85633841 has 4 divisors (see below), whose sum is σ = 85677300. Its totient is φ = 85590384.

The previous prime is 85633771. The next prime is 85633861. The reversal of 85633841 is 14833658.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35521600 + 50112241 = 5960^2 + 7079^2 .

It is a cyclic number.

It is not a de Polignac number, because 85633841 - 2¹⁰ = 85632817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85633795 and 85633804.

It is not an unprimeable number, because it can be changed into a prime (85633861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18626 + ... + 22763.

It is an arithmetic number, because the mean of its divisors is an integer number (21419325).

Almost surely, 2^85633841 is an apocalyptic number.

It is an amenable number.

85633841 is a deficient number, since it is larger than the sum of its proper divisors (43459).

85633841 is a wasteful number, since it uses less digits than its factorization.

85633841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43458.

The product of its digits is 69120, while the sum is 38.

The square root of 85633841 is about 9253.8554667771. The cubic root of 85633841 is about 440.7731602488.

The spelling of 85633841 in words is "eighty-five million, six hundred thirty-three thousand, eight hundred forty-one".