2843681 has 4 divisors (see below), whose sum is σ = 2886192. Its totient is φ = 2801172.

The previous prime is 2843677. The next prime is 2843683. The reversal of 2843681 is 1863482.

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.

It is a cyclic number.

It is not a de Polignac number, because 2843681 - 2² = 2843677 is a prime.

It is a super-2 number, since 2×2843681² = 16173043259522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2843683) 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, 21155 + ... + 21288.

It is an arithmetic number, because the mean of its divisors is an integer number (721548).

2^2843681 is an apocalyptic number.

It is an amenable number.

2843681 is a deficient number, since it is larger than the sum of its proper divisors (42511).

2843681 is an equidigital number, since it uses as much as digits as its factorization.

2843681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42510.

The product of its digits is 9216, while the sum is 32.

The square root of 2843681 is about 1686.3217367988. The cubic root of 2843681 is about 141.6751318279.

The spelling of 2843681 in words is "two million, eight hundred forty-three thousand, six hundred eighty-one".