985801 has 4 divisors (see below), whose sum is σ = 991872. Its totient is φ = 979732.

The previous prime is 985799. The next prime is 985807. The reversal of 985801 is 108589.

985801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108589 = 13 ⋅8353.

It is a cyclic number.

It is not a de Polignac number, because 985801 - 2¹ = 985799 is a prime.

It is a super-2 number, since 2×985801² = 1943607223202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985807) 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, 2785 + ... + 3118.

It is an arithmetic number, because the mean of its divisors is an integer number (247968).

2⁹⁸⁵⁸⁰¹ is an apocalyptic number.

It is an amenable number.

985801 is a deficient number, since it is larger than the sum of its proper divisors (6071).

985801 is a wasteful number, since it uses less digits than its factorization.

985801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 985801 is about 992.8751180284. The cubic root of 985801 is about 99.5244420312.

The spelling of 985801 in words is "nine hundred eighty-five thousand, eight hundred one".