85802 has 4 divisors (see below), whose sum is σ = 128706. Its totient is φ = 42900.

The previous prime is 85793. The next prime is 85817. The reversal of 85802 is 20858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20858 = 2 ⋅10429.

It can be written as a sum of positive squares in only one way, i.e., 63001 + 22801 = 251^2 + 151^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21449 + ... + 21452.

2⁸⁵⁸⁰² is an apocalyptic number.

85802 is a deficient number, since it is larger than the sum of its proper divisors (42904).

85802 is a wasteful number, since it uses less digits than its factorization.

85802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42903.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 85802 is about 292.9197842414. The cubic root of 85802 is about 44.1061486723.

The spelling of 85802 in words is "eighty-five thousand, eight hundred two".