85169 has 8 divisors (see below), whose sum is σ = 101760. Its totient is φ = 69828.

The previous prime is 85159. The next prime is 85193. The reversal of 85169 is 96158.

It is not a de Polignac number, because 85169 - 2⁸ = 84913 is a prime.

It is a super-2 number, since 2×85169² = 14507517122, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (2160) is a multiple of the sum of its prime divisors (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3692 + ... + 3714.

It is an arithmetic number, because the mean of its divisors is an integer number (12720).

2⁸⁵¹⁶⁹ is an apocalyptic number.

It is an amenable number.

85169 is a deficient number, since it is larger than the sum of its proper divisors (16591).

85169 is an frugal number, since it uses more digits than its factorization.

85169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 30 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

The square root of 85169 is about 291.8372834303. The cubic root of 85169 is about 43.9974172038.

It can be divided in two parts, 85 and 169, that multiplied together give a triangular number (14365 = T₁₆₉).

The spelling of 85169 in words is "eighty-five thousand, one hundred sixty-nine".