3633021 has 12 divisors (see below), whose sum is σ = 5997472. Its totient is φ = 2075976.

The previous prime is 3633017. The next prime is 3633029. The reversal of 3633021 is 1203363.

It is a happy number.

3633021 is a `hidden beast` number, since 363 + 302 + 1 = 666.

It is not a de Polignac number, because 3633021 - 2² = 3633017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3632985 and 3633003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3633029) 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 11 ways as a sum of consecutive naturals, for example, 28771 + ... + 28896.

Almost surely, 2^3633021 is an apocalyptic number.

It is an amenable number.

3633021 is a deficient number, since it is larger than the sum of its proper divisors (2364451).

3633021 is a wasteful number, since it uses less digits than its factorization.

3633021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57680 (or 57677 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 3633021 is about 1906.0485303370. The cubic root of 3633021 is about 153.7290592142.

Adding to 3633021 its reverse (1203363), we get a palindrome (4836384).

The spelling of 3633021 in words is "three million, six hundred thirty-three thousand, twenty-one".