5564640256 has 44 divisors (see below), whose sum is σ = 12712983568. Its totient is φ = 2384842752.

The previous prime is 5564640241. The next prime is 5564640259. The reversal of 5564640256 is 6520464655.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5564640259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380991 + ... + 395326.

Almost surely, 2^5564640256 is an apocalyptic number.

5564640256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5564640256 is an abundant number, since it is smaller than the sum of its proper divisors (7148343312).

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

5564640256 is an equidigital number, since it uses as much as digits as its factorization.

5564640256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776344 (or 776326 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The square root of 5564640256 is about 74596.5163797881. The cubic root of 5564640256 is about 1772.0624830408.

The spelling of 5564640256 in words is "five billion, five hundred sixty-four million, six hundred forty thousand, two hundred fifty-six".