2564774 has 4 divisors (see below), whose sum is σ = 3847164. Its totient is φ = 1282386.

The previous prime is 2564759. The next prime is 2564813. The reversal of 2564774 is 4774652.

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

It is a plaindrome in base 15.

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, 641192 + ... + 641195.

It is an arithmetic number, because the mean of its divisors is an integer number (961791).

2^2564774 is an apocalyptic number.

2564774 is a deficient number, since it is larger than the sum of its proper divisors (1282390).

2564774 is a wasteful number, since it uses less digits than its factorization.

2564774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282389.

The product of its digits is 47040, while the sum is 35.

The square root of 2564774 is about 1601.4911801193. The cubic root of 2564774 is about 136.8830586083.

The spelling of 2564774 in words is "two million, five hundred sixty-four thousand, seven hundred seventy-four".