2706649 has 6 divisors (see below), whose sum is σ = 2975210. Its totient is φ = 2460480.

The previous prime is 2706637. The next prime is 2706653. The reversal of 2706649 is 9466072.

2706649 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., 2271049 + 435600 = 1507^2 + 660^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2706649 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2706629) 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 in 5 ways as a sum of consecutive naturals, for example, 11064 + ... + 11305.

2^2706649 is an apocalyptic number.

It is an amenable number.

2706649 is a deficient number, since it is larger than the sum of its proper divisors (268561).

2706649 is a wasteful number, since it uses less digits than its factorization.

2706649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22391 (or 22380 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2706649 is about 1645.1896547207. The cubic root of 2706649 is about 139.3618747317.

The spelling of 2706649 in words is "two million, seven hundred six thousand, six hundred forty-nine".