3705646 has 16 divisors (see below), whose sum is σ = 6687360. Its totient is φ = 1504440.

The previous prime is 3705629. The next prime is 3705659. The reversal of 3705646 is 6465073.

3705646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6700 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (417960).

Almost surely, 2^3705646 is an apocalyptic number.

3705646 is a deficient number, since it is larger than the sum of its proper divisors (2981714).

3705646 is a wasteful number, since it uses less digits than its factorization.

3705646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13959.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 3705646 is about 1925.0054545377. The cubic root of 3705646 is about 154.7466690830.

The spelling of 3705646 in words is "three million, seven hundred five thousand, six hundred forty-six".