3601666 has 4 divisors (see below), whose sum is σ = 5402502. Its totient is φ = 1800832.

The previous prime is 3601627. The next prime is 3601669. The reversal of 3601666 is 6661063.

3601666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2313441 + 1288225 = 1521^2 + 1135^2 .

It is not an unprimeable number, because it can be changed into a prime (3601669) 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, 900415 + ... + 900418.

Almost surely, 2^3601666 is an apocalyptic number.

3601666 is a deficient number, since it is larger than the sum of its proper divisors (1800836).

3601666 is a wasteful number, since it uses less digits than its factorization.

3601666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800835.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3601666 is about 1897.8055748680. The cubic root of 3601666 is about 153.2855248977.

The spelling of 3601666 in words is "three million, six hundred one thousand, six hundred sixty-six".