2681813 has 8 divisors (see below), whose sum is σ = 2755200. Its totient is φ = 2609568.

The previous prime is 2681807. The next prime is 2681827. The reversal of 2681813 is 3181862.

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 2681813 - 2⁸ = 2681557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681803) 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 7 ways as a sum of consecutive naturals, for example, 6353 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (344400).

2^2681813 is an apocalyptic number.

It is an amenable number.

2681813 is a deficient number, since it is larger than the sum of its proper divisors (73387).

2681813 is an equidigital number, since it uses as much as digits as its factorization.

2681813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its digits is 2304, while the sum is 29.

The square root of 2681813 is about 1637.6241937636. The cubic root of 2681813 is about 138.9343063792.

The spelling of 2681813 in words is "two million, six hundred eighty-one thousand, eight hundred thirteen".