2604644404 has 12 divisors (see below), whose sum is σ = 4584476484. Its totient is φ = 1294793984.

The previous prime is 2604644401. The next prime is 2604644423. The reversal of 2604644404 is 4044464062.

It can be written as a sum of positive squares in 2 ways, for example, as 1406100004 + 1198544400 = 37498^2 + 34620^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2604644404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604644401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1881277 + ... + 1882660.

It is an arithmetic number, because the mean of its divisors is an integer number (382039707).

Almost surely, 2^2604644404 is an apocalyptic number.

It is an amenable number.

2604644404 is a deficient number, since it is larger than the sum of its proper divisors (1979832080).

2604644404 is a wasteful number, since it uses less digits than its factorization.

2604644404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764114 (or 3764112 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

The square root of 2604644404 is about 51035.7169441167. The cubic root of 2604644404 is about 1375.8871461043.

The spelling of 2604644404 in words is "two billion, six hundred four million, six hundred forty-four thousand, four hundred four".