2604605256 has 96 divisors (see below), whose sum is σ = 7706649600. Its totient is φ = 788123520.

The previous prime is 2604605219. The next prime is 2604605279. The reversal of 2604605256 is 6525064062.

2604605256 is a `hidden beast` number, since 26 + 0 + 4 + 605 + 25 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2604605256.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 654585 + ... + 658551.

It is an arithmetic number, because the mean of its divisors is an integer number (80277600).

Almost surely, 2^2604605256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2604605256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3853324800).

2604605256 is an abundant number, since it is smaller than the sum of its proper divisors (5102044344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2604605256 is a wasteful number, since it uses less digits than its factorization.

2604605256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819 (or 4812 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2604605256 is about 51035.3334073561. Note that the first 3 decimals coincide. The cubic root of 2604605256 is about 1375.8802528409.

The spelling of 2604605256 in words is "two billion, six hundred four million, six hundred five thousand, two hundred fifty-six".