85641193 has 4 divisors (see below), whose sum is σ = 93426768. Its totient is φ = 77855620.

The previous prime is 85641187. The next prime is 85641197. The reversal of 85641193 is 39114658.

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 85641193 - 2⁵ = 85641161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85641197) 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, 3892771 + ... + 3892792.

It is an arithmetic number, because the mean of its divisors is an integer number (23356692).

Almost surely, 2^85641193 is an apocalyptic number.

It is an amenable number.

85641193 is a deficient number, since it is larger than the sum of its proper divisors (7785575).

85641193 is a wasteful number, since it uses less digits than its factorization.

85641193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785574.

The product of its digits is 25920, while the sum is 37.

The square root of 85641193 is about 9254.2526980843. The cubic root of 85641193 is about 440.7857739207.

It can be divided in two parts, 85 and 641193, that added together give a triangular number (641278 = T₁₁₃₂).

The spelling of 85641193 in words is "eighty-five million, six hundred forty-one thousand, one hundred ninety-three".