85642033 has 4 divisors (see below), whose sum is σ = 85660660. Its totient is φ = 85623408.

The previous prime is 85642021. The next prime is 85642043. The reversal of 85642033 is 33024658.

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 63250209 + 22391824 = 7953^2 + 4732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85642033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85641986 and 85642004.

It is not an unprimeable number, because it can be changed into a prime (85642043) 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, 3091 + ... + 13447.

It is an arithmetic number, because the mean of its divisors is an integer number (21415165).

Almost surely, 2^85642033 is an apocalyptic number.

It is an amenable number.

85642033 is a deficient number, since it is larger than the sum of its proper divisors (18627).

85642033 is a wasteful number, since it uses less digits than its factorization.

85642033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18626.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 85642033 is about 9254.2980825128. The cubic root of 85642033 is about 440.7872150451.

The spelling of 85642033 in words is "eighty-five million, six hundred forty-two thousand, thirty-three".