2216063646 has 24 divisors (see below), whose sum is σ = 4859323560. Its totient is φ = 729787536.

The previous prime is 2216063617. The next prime is 2216063657. The reversal of 2216063646 is 6463606122.

2216063646 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 0 + 6 + 3 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2216063646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740161 + ... + 743148.

It is an arithmetic number, because the mean of its divisors is an integer number (202471815).

Almost surely, 2^2216063646 is an apocalyptic number.

2216063646 is an abundant number, since it is smaller than the sum of its proper divisors (2643259914).

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

2216063646 is a wasteful number, since it uses less digits than its factorization.

2216063646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483400 (or 1483397 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 2216063646 is about 47075.0851937625. The cubic root of 2216063646 is about 1303.7492645084.

Adding to 2216063646 its reverse (6463606122), we get a palindrome (8679669768).

The spelling of 2216063646 in words is "two billion, two hundred sixteen million, sixty-three thousand, six hundred forty-six".