2604647856 has 80 divisors (see below), whose sum is σ = 6925565664. Its totient is φ = 842913792.

The previous prime is 2604647831. The next prime is 2604647867. The reversal of 2604647856 is 6587464062.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987916 + ... + 990548.

Almost surely, 2^2604647856 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 2604647856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3462782832).

2604647856 is an abundant number, since it is smaller than the sum of its proper divisors (4320917808).

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

2604647856 is a wasteful number, since it uses less digits than its factorization.

2604647856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238 (or 3232 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The square root of 2604647856 is about 51035.7507635579. The cubic root of 2604647856 is about 1375.8877539365.

The spelling of 2604647856 in words is "two billion, six hundred four million, six hundred forty-seven thousand, eight hundred fifty-six".