2566408704 has 80 divisors (see below), whose sum is σ = 6864149952. Its totient is φ = 852082688.

The previous prime is 2566408703. The next prime is 2566408751. The reversal of 2566408704 is 4078046652.

It is not an unprimeable number, because it can be changed into a prime (2566408703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400792 + ... + 407144.

Almost surely, 2^2566408704 is an apocalyptic number.

2566408704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566408704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3432074976).

2566408704 is an abundant number, since it is smaller than the sum of its proper divisors (4297741248).

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

2566408704 is an equidigital number, since it uses as much as digits as its factorization.

2566408704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637 (or 6621 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 2566408704 is about 50659.7345433235. The cubic root of 2566408704 is about 1369.1213404343.

The spelling of 2566408704 in words is "two billion, five hundred sixty-six million, four hundred eight thousand, seven hundred four".