3641643 has 12 divisors (see below), whose sum is σ = 5285280. Its totient is φ = 2416176.

The previous prime is 3641641. The next prime is 3641647. The reversal of 3641643 is 3461463.

It is not a de Polignac number, because 3641643 - 2¹ = 3641641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3641641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305 + ... + 2997.

It is an arithmetic number, because the mean of its divisors is an integer number (440440).

Almost surely, 2^3641643 is an apocalyptic number.

3641643 is a deficient number, since it is larger than the sum of its proper divisors (1643637).

3641643 is a wasteful number, since it uses less digits than its factorization.

3641643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938 (or 1935 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 3641643 is about 1908.3089372531. The cubic root of 3641643 is about 153.8505746871.

The spelling of 3641643 in words is "three million, six hundred forty-one thousand, six hundred forty-three".