2566478 has 8 divisors (see below), whose sum is σ = 4017168. Its totient is φ = 1227424.

The previous prime is 2566469. The next prime is 2566481. The reversal of 2566478 is 8746652.

It is a happy number.

2566478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27851 + ... + 27942.

It is an arithmetic number, because the mean of its divisors is an integer number (502146).

2^2566478 is an apocalyptic number.

2566478 is a deficient number, since it is larger than the sum of its proper divisors (1450690).

2566478 is a wasteful number, since it uses less digits than its factorization.

2566478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55818.

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

The square root of 2566478 is about 1602.0230959634. The cubic root of 2566478 is about 136.9133662943.

The spelling of 2566478 in words is "two million, five hundred sixty-six thousand, four hundred seventy-eight".