85816841 has 16 divisors (see below), whose sum is σ = 98039808. Its totient is φ = 74355600.

The previous prime is 85816837. The next prime is 85816847. The reversal of 85816841 is 14861858.

It is not a de Polignac number, because 85816841 - 2² = 85816837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85816847) 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 15 ways as a sum of consecutive naturals, for example, 108650 + ... + 109436.

It is an arithmetic number, because the mean of its divisors is an integer number (6127488).

Almost surely, 2^85816841 is an apocalyptic number.

It is an amenable number.

85816841 is a deficient number, since it is larger than the sum of its proper divisors (12222967).

85816841 is a wasteful number, since it uses less digits than its factorization.

85816841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252.

The product of its digits is 61440, while the sum is 41.

The square root of 85816841 is about 9263.7379604564. The cubic root of 85816841 is about 441.0869150973.

The spelling of 85816841 in words is "eighty-five million, eight hundred sixteen thousand, eight hundred forty-one".