2112685 has 4 divisors (see below), whose sum is σ = 2535228. Its totient is φ = 1690144.

The previous prime is 2112683. The next prime is 2112703. The reversal of 2112685 is 5862112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1196836 + 915849 = 1094^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112685 - 2¹ = 2112683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112683) 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, 211264 + ... + 211273.

It is an arithmetic number, because the mean of its divisors is an integer number (633807).

2^2112685 is an apocalyptic number.

It is an amenable number.

2112685 is a deficient number, since it is larger than the sum of its proper divisors (422543).

2112685 is an equidigital number, since it uses as much as digits as its factorization.

2112685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422542.

The product of its digits is 960, while the sum is 25.

The square root of 2112685 is about 1453.5078259163. The cubic root of 2112685 is about 128.3152426665.

Adding to 2112685 its reverse (5862112), we get a palindrome (7974797).

The spelling of 2112685 in words is "two million, one hundred twelve thousand, six hundred eighty-five".