2564834 has 4 divisors (see below), whose sum is σ = 3847254. Its totient is φ = 1282416.

The previous prime is 2564831. The next prime is 2564843. The reversal of 2564834 is 4384652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 418609 = 1465^2 + 647^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2564834.

It is not an unprimeable number, because it can be changed into a prime (2564831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641207 + ... + 641210.

2^2564834 is an apocalyptic number.

2564834 is a deficient number, since it is larger than the sum of its proper divisors (1282420).

2564834 is a wasteful number, since it uses less digits than its factorization.

2564834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282419.

The product of its digits is 23040, while the sum is 32.

The square root of 2564834 is about 1601.5099125513. The cubic root of 2564834 is about 136.8841260083.

The spelling of 2564834 in words is "two million, five hundred sixty-four thousand, eight hundred thirty-four".