85799 has 12 divisors (see below), whose sum is σ = 106704. Its totient is φ = 68544.

The previous prime is 85793. The next prime is 85817. The reversal of 85799 is 99758.

It is not a de Polignac number, because 85799 - 2¹² = 81703 is a prime.

It is a super-2 number, since 2×85799² = 14722936802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (8892).

2⁸⁵⁷⁹⁹ is an apocalyptic number.

85799 is a deficient number, since it is larger than the sum of its proper divisors (20905).

85799 is a wasteful number, since it uses less digits than its factorization.

85799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 127 counting only the distinct ones).

The product of its digits is 22680, while the sum is 38.

The square root of 85799 is about 292.9146633407. The cubic root of 85799 is about 44.1056346206.

The spelling of 85799 in words is "eighty-five thousand, seven hundred ninety-nine".