2689813 has 4 divisors (see below), whose sum is σ = 3074080. Its totient is φ = 2305548.

The previous prime is 2689807. The next prime is 2689861. The reversal of 2689813 is 3189862.

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 not a de Polignac number, because 2689813 - 2²¹ = 592661 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689613) 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, 192123 + ... + 192136.

It is an arithmetic number, because the mean of its divisors is an integer number (768520).

2^2689813 is an apocalyptic number.

It is an amenable number.

2689813 is a deficient number, since it is larger than the sum of its proper divisors (384267).

2689813 is an equidigital number, since it uses as much as digits as its factorization.

2689813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384266.

The product of its digits is 20736, while the sum is 37.

The square root of 2689813 is about 1640.0649377387. The cubic root of 2689813 is about 139.0723188707.

The spelling of 2689813 in words is "two million, six hundred eighty-nine thousand, eight hundred thirteen".