85621833 has 32 divisors (see below), whose sum is σ = 143164800. Its totient is φ = 50097600.

The previous prime is 85621831. The next prime is 85621883. The reversal of 85621833 is 33812658.

It is not a de Polignac number, because 85621833 - 2¹ = 85621831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85621831) 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 31 ways as a sum of consecutive naturals, for example, 3643 + ... + 13583.

It is an arithmetic number, because the mean of its divisors is an integer number (4473900).

Almost surely, 2^85621833 is an apocalyptic number.

It is an amenable number.

85621833 is a deficient number, since it is larger than the sum of its proper divisors (57542967).

85621833 is a wasteful number, since it uses less digits than its factorization.

85621833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990 (or 9984 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 85621833 is about 9253.2066333785. The cubic root of 85621833 is about 440.7525568228.

The spelling of 85621833 in words is "eighty-five million, six hundred twenty-one thousand, eight hundred thirty-three".