3601663 has 4 divisors (see below), whose sum is σ = 3878728. Its totient is φ = 3324600.

The previous prime is 3601627. The next prime is 3601669. The reversal of 3601663 is 3661063.

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

It is a cyclic number.

It is not a de Polignac number, because 3601663 - 2⁹ = 3601151 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 (3601669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138513 + ... + 138538.

It is an arithmetic number, because the mean of its divisors is an integer number (969682).

Almost surely, 2^3601663 is an apocalyptic number.

3601663 is a deficient number, since it is larger than the sum of its proper divisors (277065).

3601663 is a wasteful number, since it uses less digits than its factorization.

3601663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277064.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 3601663 is about 1897.8047844813. The cubic root of 3601663 is about 153.2854823381.

The spelling of 3601663 in words is "three million, six hundred one thousand, six hundred sixty-three".