2606566 has 4 divisors (see below), whose sum is σ = 3909852. Its totient is φ = 1303282.

The previous prime is 2606551. The next prime is 2606579. The reversal of 2606566 is 6656062.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651640 + ... + 651643.

It is an arithmetic number, because the mean of its divisors is an integer number (977463).

2^2606566 is an apocalyptic number.

2606566 is a deficient number, since it is larger than the sum of its proper divisors (1303286).

2606566 is a wasteful number, since it uses less digits than its factorization.

2606566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303285.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2606566 is about 1614.4862960087. The cubic root of 2606566 is about 137.6225419960.

The spelling of 2606566 in words is "two million, six hundred six thousand, five hundred sixty-six".