2665556 has 12 divisors (see below), whose sum is σ = 4683840. Its totient is φ = 1327320.

The previous prime is 2665547. The next prime is 2665589. The reversal of 2665556 is 6555662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 2313.

It is an arithmetic number, because the mean of its divisors is an integer number (390320).

2^2665556 is an apocalyptic number.

It is an amenable number.

2665556 is a deficient number, since it is larger than the sum of its proper divisors (2018284).

2665556 is a wasteful number, since it uses less digits than its factorization.

2665556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734 (or 2732 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 2665556 is about 1632.6530556122. The cubic root of 2665556 is about 138.6529998653.

The spelling of 2665556 in words is "two million, six hundred sixty-five thousand, five hundred fifty-six".