2804605 has 8 divisors (see below), whose sum is σ = 3447864. Its totient is φ = 2188800.

The previous prime is 2804591. The next prime is 2804617. The reversal of 2804605 is 5064082.

It can be written as a sum of positive squares in 4 ways, for example, as 251001 + 2553604 = 501^2 + 1598^2 .

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

It is not a de Polignac number, because 2804605 - 2⁵ = 2804573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2804605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6636 + ... + 7045.

It is an arithmetic number, because the mean of its divisors is an integer number (430983).

2^2804605 is an apocalyptic number.

It is an amenable number.

2804605 is a deficient number, since it is larger than the sum of its proper divisors (643259).

2804605 is a wasteful number, since it uses less digits than its factorization.

2804605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13727.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2804605 is about 1674.6954947094. The cubic root of 2804605 is about 141.0232009170.

Adding to 2804605 its reverse (5064082), we get a palindrome (7868687).

The spelling of 2804605 in words is "two million, eight hundred four thousand, six hundred five".