2660849 has 2 divisors, whose sum is σ = 2660850. Its totient is φ = 2660848.

The previous prime is 2660839. The next prime is 2660863. The reversal of 2660849 is 9480662.

2660849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2582449 + 78400 = 1607^2 + 280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2660809) 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, 1330424 + 1330425.

It is an arithmetic number, because the mean of its divisors is an integer number (1330425).

2^2660849 is an apocalyptic number.

It is an amenable number.

2660849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660849 is an equidigital number, since it uses as much as digits as its factorization.

2660849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2660849 is about 1631.2108999145. The cubic root of 2660849 is about 138.5713378275.

The spelling of 2660849 in words is "two million, six hundred sixty thousand, eight hundred forty-nine".