2566804464 has 200 divisors, whose sum is σ = 8765216768. Its totient is φ = 709637760.

The previous prime is 2566804459. The next prime is 2566804523. The reversal of 2566804464 is 4644086652.

2566804464 is a `hidden beast` number, since 2 + 566 + 80 + 4 + 4 + 6 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 276669 + ... + 285795.

Almost surely, 2^2566804464 is an apocalyptic number.

2566804464 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 2566804464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4382608384).

2566804464 is an abundant number, since it is smaller than the sum of its proper divisors (6198412304).

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

2566804464 is a wasteful number, since it uses less digits than its factorization.

2566804464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185 (or 9170 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 2566804464 is about 50663.6404534850. The cubic root of 2566804464 is about 1369.1917131709.

The spelling of 2566804464 in words is "two billion, five hundred sixty-six million, eight hundred four thousand, four hundred sixty-four".