2100085 has 8 divisors (see below), whose sum is σ = 2714040. Its totient is φ = 1550784.

The previous prime is 2100079. The next prime is 2100097. The reversal of 2100085 is 5800012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 288369 + 1811716 = 537^2 + 1346^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2100085 - 2⁵ = 2100053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16090 + ... + 16219.

It is an arithmetic number, because the mean of its divisors is an integer number (339255).

2^2100085 is an apocalyptic number.

It is an amenable number.

2100085 is a deficient number, since it is larger than the sum of its proper divisors (613955).

2100085 is a wasteful number, since it uses less digits than its factorization.

2100085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32327.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2100085 is about 1449.1670021085. The cubic root of 2100085 is about 128.0596442410.

Adding to 2100085 its reverse (5800012), we get a palindrome (7900097).

The spelling of 2100085 in words is "two million, one hundred thousand, eighty-five".