2604065 has 4 divisors (see below), whose sum is σ = 3124884. Its totient is φ = 2083248.

The previous prime is 2604061. The next prime is 2604071. The reversal of 2604065 is 5604062.

2604065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1827904 + 776161 = 1352^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 2604065 - 2² = 2604061 is a prime.

It is a super-4 number, since 4×2604065⁴ (a number of 27 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2604065.

It is not an unprimeable number, because it can be changed into a prime (2604061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260402 + ... + 260411.

It is an arithmetic number, because the mean of its divisors is an integer number (781221).

2^2604065 is an apocalyptic number.

It is an amenable number.

2604065 is a deficient number, since it is larger than the sum of its proper divisors (520819).

2604065 is an equidigital number, since it uses as much as digits as its factorization.

2604065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520818.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2604065 is about 1613.7115603478. The cubic root of 2604065 is about 137.5785116356.

The spelling of 2604065 in words is "two million, six hundred four thousand, sixty-five".