2564554636 has 24 divisors (see below), whose sum is σ = 5130742176. Its totient is φ = 1098744960.

The previous prime is 2564554627. The next prime is 2564554637. The reversal of 2564554636 is 6364554652.

It is not an unprimeable number, because it can be changed into a prime (2564554637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87480 + ... + 113056.

It is an arithmetic number, because the mean of its divisors is an integer number (213780924).

Almost surely, 2^2564554636 is an apocalyptic number.

It is an amenable number.

2564554636 is an abundant number, since it is smaller than the sum of its proper divisors (2566187540).

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

2564554636 is a wasteful number, since it uses less digits than its factorization.

2564554636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29169 (or 29167 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 46.

The square root of 2564554636 is about 50641.4320097684. The cubic root of 2564554636 is about 1368.7915598092.

The spelling of 2564554636 in words is "two billion, five hundred sixty-four million, five hundred fifty-four thousand, six hundred thirty-six".