2564352668 has 12 divisors (see below), whose sum is σ = 4517337552. Its totient is φ = 1273684800.

The previous prime is 2564352649. The next prime is 2564352671. The reversal of 2564352668 is 8662534652.

2564352668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2122205 + ... + 2123412.

It is an arithmetic number, because the mean of its divisors is an integer number (376444796).

Almost surely, 2^2564352668 is an apocalyptic number.

It is an amenable number.

2564352668 is a deficient number, since it is larger than the sum of its proper divisors (1952984884).

2564352668 is a wasteful number, since it uses less digits than its factorization.

2564352668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245772 (or 4245770 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 47.

The square root of 2564352668 is about 50639.4378720775. The cubic root of 2564352668 is about 1368.7556264289.

The spelling of 2564352668 in words is "two billion, five hundred sixty-four million, three hundred fifty-two thousand, six hundred sixty-eight".