2564812 has 6 divisors (see below), whose sum is σ = 4488428. Its totient is φ = 1282404.

The previous prime is 2564759. The next prime is 2564813. The reversal of 2564812 is 2184652.

It is not an unprimeable number, because it can be changed into a prime (2564813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320598 + ... + 320605.

2^2564812 is an apocalyptic number.

It is an amenable number.

2564812 is a deficient number, since it is larger than the sum of its proper divisors (1923616).

2564812 is a wasteful number, since it uses less digits than its factorization.

2564812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641207 (or 641205 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 2564812 is about 1601.5030440183. The cubic root of 2564812 is about 136.8837346302.

Adding to 2564812 its product of digits (3840), we get a palindrome (2568652).

The spelling of 2564812 in words is "two million, five hundred sixty-four thousand, eight hundred twelve".