2564798 has 4 divisors (see below), whose sum is σ = 3847200. Its totient is φ = 1282398.

The previous prime is 2564759. The next prime is 2564813. The reversal of 2564798 is 8974652.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641198 + ... + 641201.

It is an arithmetic number, because the mean of its divisors is an integer number (961800).

2^2564798 is an apocalyptic number.

2564798 is a deficient number, since it is larger than the sum of its proper divisors (1282402).

2564798 is a wasteful number, since it uses less digits than its factorization.

2564798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282401.

The product of its digits is 120960, while the sum is 41.

The square root of 2564798 is about 1601.4986731184. The cubic root of 2564798 is about 136.8834855703.

The spelling of 2564798 in words is "two million, five hundred sixty-four thousand, seven hundred ninety-eight".