2904605 has 12 divisors (see below), whose sum is σ = 3831996. Its totient is φ = 2112000.

The previous prime is 2904599. The next prime is 2904613. The reversal of 2904605 is 5064092.

It can be written as a sum of positive squares in 2 ways, for example, as 1359556 + 1545049 = 1166^2 + 1243^2 .

It is not a de Polignac number, because 2904605 - 2⁶ = 2904541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796 + ... + 3005.

It is an arithmetic number, because the mean of its divisors is an integer number (319333).

2^2904605 is an apocalyptic number.

It is an amenable number.

2904605 is a deficient number, since it is larger than the sum of its proper divisors (927391).

2904605 is a wasteful number, since it uses less digits than its factorization.

2904605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828 (or 4817 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2904605 is about 1704.2901748235. The cubic root of 2904605 is about 142.6797567351.

Adding to 2904605 its reverse (5064092), we get a palindrome (7968697).

The spelling of 2904605 in words is "two million, nine hundred four thousand, six hundred five".