85697 has 6 divisors (see below), whose sum is σ = 92034. Its totient is φ = 79520.

The previous prime is 85691. The next prime is 85703. The reversal of 85697 is 79658.

It is an interprime number because it is at equal distance from previous prime (85691) and next prime (85703).

It can be written as a sum of positive squares in only one way, i.e., 80656 + 5041 = 284^2 + 71^2 .

It is not a de Polignac number, because 85697 - 2¹⁰ = 84673 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (85691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172 + ... + 1242.

It is an arithmetic number, because the mean of its divisors is an integer number (15339).

2⁸⁵⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

85697 is a deficient number, since it is larger than the sum of its proper divisors (6337).

85697 is an equidigital number, since it uses as much as digits as its factorization.

85697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 88 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 85697 is about 292.7404994189. The cubic root of 85697 is about 44.0881497289.

The spelling of 85697 in words is "eighty-five thousand, six hundred ninety-seven".