2704805 has 4 divisors (see below), whose sum is σ = 3245772. Its totient is φ = 2163840.

The previous prime is 2704789. The next prime is 2704813. The reversal of 2704805 is 5084072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 351649 + 2353156 = 593^2 + 1534^2 .

It is not a de Polignac number, because 2704805 - 2⁴ = 2704789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270476 + ... + 270485.

It is an arithmetic number, because the mean of its divisors is an integer number (811443).

2^2704805 is an apocalyptic number.

It is an amenable number.

2704805 is a deficient number, since it is larger than the sum of its proper divisors (540967).

2704805 is an equidigital number, since it uses as much as digits as its factorization.

2704805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540966.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2704805 is about 1644.6291375261. The cubic root of 2704805 is about 139.3302191460.

Adding to 2704805 its reverse (5084072), we get a palindrome (7788877).

The spelling of 2704805 in words is "two million, seven hundred four thousand, eight hundred five".