2766649 has 2 divisors, whose sum is σ = 2766650. Its totient is φ = 2766648.

The previous prime is 2766637. The next prime is 2766661. The reversal of 2766649 is 9466672.

It is a balanced prime because it is at equal distance from previous prime (2766637) and next prime (2766661).

It can be written as a sum of positive squares in only one way, i.e., 2458624 + 308025 = 1568^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2766649 - 2⁷ = 2766521 is a prime.

It is a Chen prime.

2766649 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2766679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1383324 + 1383325.

It is an arithmetic number, because the mean of its divisors is an integer number (1383325).

2^2766649 is an apocalyptic number.

It is an amenable number.

2766649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2766649 is an equidigital number, since it uses as much as digits as its factorization.

2766649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 2766649 is about 1663.3246826762. The cubic root of 2766649 is about 140.3841321288.

The spelling of 2766649 in words is "two million, seven hundred sixty-six thousand, six hundred forty-nine".