3706649 has 2 divisors, whose sum is σ = 3706650. Its totient is φ = 3706648.

The previous prime is 3706631. The next prime is 3706669. The reversal of 3706649 is 9466073.

3706649 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., 3705625 + 1024 = 1925^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 3706649 - 2⁸ = 3706393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3706609) 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, 1853324 + 1853325.

It is an arithmetic number, because the mean of its divisors is an integer number (1853325).

Almost surely, 2^3706649 is an apocalyptic number.

It is an amenable number.

3706649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3706649 is an equidigital number, since it uses as much as digits as its factorization.

3706649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 3706649 is about 1925.2659556539. The cubic root of 3706649 is about 154.7606294836.

The spelling of 3706649 in words is "three million, seven hundred six thousand, six hundred forty-nine".