3221630636 has 18 divisors (see below), whose sum is σ = 6558319908. Its totient is φ = 1380698760.

The previous prime is 3221630627. The next prime is 3221630647. The reversal of 3221630636 is 6360361223.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8218250 + ... + 8218641.

It is an arithmetic number, because the mean of its divisors is an integer number (364351106).

Almost surely, 2^3221630636 is an apocalyptic number.

It is an amenable number.

3221630636 is an abundant number, since it is smaller than the sum of its proper divisors (3336689272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221630636 is a wasteful number, since it uses less digits than its factorization.

3221630636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16436909 (or 16436900 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 3221630636 is about 56759.4101096902. The cubic root of 3221630636 is about 1476.9254770992.

Adding to 3221630636 its reverse (6360361223), we get a palindrome (9581991859).

The spelling of 3221630636 in words is "three billion, two hundred twenty-one million, six hundred thirty thousand, six hundred thirty-six".