3634641 has 6 divisors (see below), whose sum is σ = 5250050. Its totient is φ = 2423088.

The previous prime is 3634639. The next prime is 3634663. The reversal of 3634641 is 1464363.

It can be written as a sum of positive squares in only one way, i.e., 2903616 + 731025 = 1704^2 + 855^2 .

It is not a de Polignac number, because 3634641 - 2¹ = 3634639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3634601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201916 + ... + 201933.

Almost surely, 2^3634641 is an apocalyptic number.

It is an amenable number.

3634641 is a deficient number, since it is larger than the sum of its proper divisors (1615409).

3634641 is a wasteful number, since it uses less digits than its factorization.

3634641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403855 (or 403852 counting only the distinct ones).

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

The square root of 3634641 is about 1906.4734459205. The cubic root of 3634641 is about 153.7519055881.

The spelling of 3634641 in words is "three million, six hundred thirty-four thousand, six hundred forty-one".