2604641 has 4 divisors (see below), whose sum is σ = 2805012. Its totient is φ = 2404272.

The previous prime is 2604617. The next prime is 2604647. The reversal of 2604641 is 1464062.

It is a happy number.

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 108241 + 2496400 = 329^2 + 1580^2 .

It is not a de Polignac number, because 2604641 - 2¹⁰ = 2603617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2604647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100166 + ... + 100191.

It is an arithmetic number, because the mean of its divisors is an integer number (701253).

2^2604641 is an apocalyptic number.

It is an amenable number.

2604641 is a deficient number, since it is larger than the sum of its proper divisors (200371).

2604641 is a wasteful number, since it uses less digits than its factorization.

2604641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200370.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2604641 is about 1613.8900210361. The cubic root of 2604641 is about 137.5886546723.

The spelling of 2604641 in words is "two million, six hundred four thousand, six hundred forty-one".