2684891 has 8 divisors (see below), whose sum is σ = 2973504. Its totient is φ = 2403720.

The previous prime is 2684881. The next prime is 2684893. The reversal of 2684891 is 1984862.

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

It is a de Polignac number, because none of the positive numbers 2^k-2684891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2684893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085 + ... + 2558.

It is an arithmetic number, because the mean of its divisors is an integer number (371688).

2^2684891 is an apocalyptic number.

2684891 is a deficient number, since it is larger than the sum of its proper divisors (288613).

2684891 is a wasteful number, since it uses less digits than its factorization.

2684891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721.

The product of its digits is 27648, while the sum is 38.

The square root of 2684891 is about 1638.5637003181. The cubic root of 2684891 is about 138.9874391286.

The spelling of 2684891 in words is "two million, six hundred eighty-four thousand, eight hundred ninety-one".