85368169 has 4 divisors (see below), whose sum is σ = 90389844. Its totient is φ = 80346496.

The previous prime is 85368163. The next prime is 85368193. The reversal of 85368169 is 96186358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96186358 = 2 ⋅48093179.

It can be written as a sum of positive squares in 2 ways, for example, as 64208169 + 21160000 = 8013^2 + 4600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85368169 is a prime.

It is a super-2 number, since 2×85368169² = 14575448556825122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85368163) 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, 2510812 + ... + 2510845.

It is an arithmetic number, because the mean of its divisors is an integer number (22597461).

Almost surely, 2^85368169 is an apocalyptic number.

It is an amenable number.

85368169 is a deficient number, since it is larger than the sum of its proper divisors (5021675).

85368169 is a wasteful number, since it uses less digits than its factorization.

85368169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021674.

The product of its digits is 311040, while the sum is 46.

The square root of 85368169 is about 9239.4896504082. The cubic root of 85368169 is about 440.3168671382.

The spelling of 85368169 in words is "eighty-five million, three hundred sixty-eight thousand, one hundred sixty-nine".