2604663405 has 64 divisors (see below), whose sum is σ = 4846302720. Its totient is φ = 1324781568.

The previous prime is 2604663403. The next prime is 2604663407. The reversal of 2604663405 is 5043664062.

2604663405 is a `hidden beast` number, since 2 + 604 + 6 + 6 + 3 + 40 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (2604663403) and next prime (2604663407).

It is not a de Polignac number, because 2604663405 - 2¹ = 2604663403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2604663405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604663403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1231629 + ... + 1233741.

It is an arithmetic number, because the mean of its divisors is an integer number (75723480).

Almost surely, 2^2604663405 is an apocalyptic number.

It is an amenable number.

2604663405 is a deficient number, since it is larger than the sum of its proper divisors (2241639315).

2604663405 is a wasteful number, since it uses less digits than its factorization.

2604663405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 2604663405 is about 51035.9030977213. The cubic root of 2604663405 is about 1375.8904918161.

The spelling of 2604663405 in words is "two billion, six hundred four million, six hundred sixty-three thousand, four hundred five".