2685143 has 4 divisors (see below), whose sum is σ = 2697408. Its totient is φ = 2672880.

The previous prime is 2685121. The next prime is 2685169. The reversal of 2685143 is 3415862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3415862 = 2 ⋅1707931.

It is a cyclic number.

It is not a de Polignac number, because 2685143 - 2¹⁸ = 2422999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5798 + ... + 6243.

It is an arithmetic number, because the mean of its divisors is an integer number (674352).

2^2685143 is an apocalyptic number.

2685143 is a deficient number, since it is larger than the sum of its proper divisors (12265).

2685143 is a wasteful number, since it uses less digits than its factorization.

2685143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12264.

The product of its digits is 5760, while the sum is 29.

The square root of 2685143 is about 1638.6405951276. The cubic root of 2685143 is about 138.9917873795.

The spelling of 2685143 in words is "two million, six hundred eighty-five thousand, one hundred forty-three".