2766644 has 6 divisors (see below), whose sum is σ = 4841634. Its totient is φ = 1383320.

The previous prime is 2766637. The next prime is 2766649. The reversal of 2766644 is 4466672.

It is a happy number.

2766644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2598544 + 168100 = 1612^2 + 410^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2766649) by changing a digit.

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 as a sum of consecutive naturals, namely, 345827 + ... + 345834.

It is an arithmetic number, because the mean of its divisors is an integer number (806939).

2^2766644 is an apocalyptic number.

It is an amenable number.

2766644 is a deficient number, since it is larger than the sum of its proper divisors (2074990).

2766644 is a wasteful number, since it uses less digits than its factorization.

2766644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691665 (or 691663 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 2766644 is about 1663.3231796617. The cubic root of 2766644 is about 140.3840475594.

The spelling of 2766644 in words is "two million, seven hundred sixty-six thousand, six hundred forty-four".