3694649 has 6 divisors (see below), whose sum is σ = 4297914. Its totient is φ = 3166800.

The previous prime is 3694643. The next prime is 3694667. The reversal of 3694649 is 9464963.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 753424 = 1715^2 + 868^2 .

It is not a de Polignac number, because 3694649 - 2⁸ = 3694393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3694643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37652 + ... + 37749.

It is an arithmetic number, because the mean of its divisors is an integer number (716319).

Almost surely, 2^3694649 is an apocalyptic number.

It is an amenable number.

3694649 is a deficient number, since it is larger than the sum of its proper divisors (603265).

3694649 is an equidigital number, since it uses as much as digits as its factorization.

3694649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75415 (or 75408 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The square root of 3694649 is about 1922.1469766904. The cubic root of 3694649 is about 154.5934402632.

The spelling of 3694649 in words is "three million, six hundred ninety-four thousand, six hundred forty-nine".