2568475644 has 48 divisors (see below), whose sum is σ = 6880032768. Its totient is φ = 730554048.

The previous prime is 2568475639. The next prime is 2568475661. The reversal of 2568475644 is 4465748652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49827 + ... + 87290.

It is an arithmetic number, because the mean of its divisors is an integer number (143334016).

Almost surely, 2^2568475644 is an apocalyptic number.

It is an amenable number.

2568475644 is an abundant number, since it is smaller than the sum of its proper divisors (4311557124).

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

2568475644 is a wasteful number, since it uses less digits than its factorization.

2568475644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137354 (or 137352 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 51.

The square root of 2568475644 is about 50680.1306628150. The cubic root of 2568475644 is about 1369.4887971432.

The spelling of 2568475644 in words is "two billion, five hundred sixty-eight million, four hundred seventy-five thousand, six hundred forty-four".