3630020321 has 12 divisors (see below), whose sum is σ = 3729950400. Its totient is φ = 3532697760.

The previous prime is 3630020291. The next prime is 3630020323. The reversal of 3630020321 is 1230200363.

It is not a de Polignac number, because 3630020321 - 2⁶ = 3630020257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3630020293 and 3630020302.

It is not an unprimeable number, because it can be changed into a prime (3630020323) 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, 735500 + ... + 740418.

It is an arithmetic number, because the mean of its divisors is an integer number (310829200).

Almost surely, 2^3630020321 is an apocalyptic number.

It is an amenable number.

3630020321 is a deficient number, since it is larger than the sum of its proper divisors (99930079).

3630020321 is an equidigital number, since it uses as much as digits as its factorization.

3630020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440 (or 5399 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 3630020321 is about 60249.6499657882. The cubic root of 3630020321 is about 1536.8672359155.

Adding to 3630020321 its reverse (1230200363), we get a palindrome (4860220684).

The spelling of 3630020321 in words is "three billion, six hundred thirty million, twenty thousand, three hundred twenty-one".