2564768 has 12 divisors (see below), whose sum is σ = 5049450. Its totient is φ = 1282368.

The previous prime is 2564759. The next prime is 2564813. The reversal of 2564768 is 8674652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1507984 + 1056784 = 1228^2 + 1028^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40043 + ... + 40106.

2^2564768 is an apocalyptic number.

It is an amenable number.

2564768 is a deficient number, since it is larger than the sum of its proper divisors (2484682).

2564768 is an equidigital number, since it uses as much as digits as its factorization.

2564768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80159 (or 80151 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 2564768 is about 1601.4893068641. The cubic root of 2564768 is about 136.8829518673.

The spelling of 2564768 in words is "two million, five hundred sixty-four thousand, seven hundred sixty-eight".