3653541 has 6 divisors (see below), whose sum is σ = 5277350. Its totient is φ = 2435688.

The previous prime is 3653509. The next prime is 3653557. The reversal of 3653541 is 1453563.

3653541 is a `hidden beast` number, since 3 + 653 + 5 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3437316 + 216225 = 1854^2 + 465^2 .

It is not a de Polignac number, because 3653541 - 2⁵ = 3653509 is a prime.

It is a Duffinian number.

3653541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3653501) 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, 202966 + ... + 202983.

Almost surely, 2^3653541 is an apocalyptic number.

It is an amenable number.

3653541 is a deficient number, since it is larger than the sum of its proper divisors (1623809).

3653541 is a wasteful number, since it uses less digits than its factorization.

3653541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405955 (or 405952 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3653541 is about 1911.4238148563. The cubic root of 3653541 is about 154.0179464102.

The spelling of 3653541 in words is "three million, six hundred fifty-three thousand, five hundred forty-one".