3705666 has 16 divisors (see below), whose sum is σ = 7431264. Its totient is φ = 1231904.

The previous prime is 3705659. The next prime is 3705679. The reversal of 3705666 is 6665073.

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2830 + ... + 3926.

It is an arithmetic number, because the mean of its divisors is an integer number (464454).

Almost surely, 2^3705666 is an apocalyptic number.

3705666 is an abundant number, since it is smaller than the sum of its proper divisors (3725598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3705666 is a wasteful number, since it uses less digits than its factorization.

3705666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 3705666 is about 1925.0106493212. The cubic root of 3705666 is about 154.7469474806.

It can be divided in two parts, 3705 and 666, that added together give a triangular number (4371 = T₉₃).

The spelling of 3705666 in words is "three million, seven hundred five thousand, six hundred sixty-six".