2604864405 has 96 divisors (see below), whose sum is σ = 5029008768. Its totient is φ = 1143267840.

The previous prime is 2604864403. The next prime is 2604864407. The reversal of 2604864405 is 5044684062.

It is an interprime number because it is at equal distance from previous prime (2604864403) and next prime (2604864407).

It is not a de Polignac number, because 2604864405 - 2¹ = 2604864403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604864403) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1249494 + ... + 1251576.

It is an arithmetic number, because the mean of its divisors is an integer number (52385508).

Almost surely, 2^2604864405 is an apocalyptic number.

It is an amenable number.

2604864405 is a deficient number, since it is larger than the sum of its proper divisors (2424144363).

2604864405 is a wasteful number, since it uses less digits than its factorization.

2604864405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The square root of 2604864405 is about 51037.8722616843. The cubic root of 2604864405 is about 1375.9258830653.

The spelling of 2604864405 in words is "two billion, six hundred four million, eight hundred sixty-four thousand, four hundred five".