3663549 has 20 divisors (see below), whose sum is σ = 5653120. Its totient is φ = 2361960.

The previous prime is 3663547. The next prime is 3663559. The reversal of 3663549 is 9453663.

It is not a de Polignac number, because 3663549 - 2¹ = 3663547 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 (3663547) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1782 + ... + 3240.

It is an arithmetic number, because the mean of its divisors is an integer number (282656).

Almost surely, 2^3663549 is an apocalyptic number.

It is an amenable number.

3663549 is a deficient number, since it is larger than the sum of its proper divisors (1989571).

3663549 is a wasteful number, since it uses less digits than its factorization.

3663549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1493 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 3663549 is about 1914.0399682347. The cubic root of 3663549 is about 154.1584499476.

The spelling of 3663549 in words is "three million, six hundred sixty-three thousand, five hundred forty-nine".