2216662641 has 6 divisors (see below), whose sum is σ = 3201846050. Its totient is φ = 1477775088.

The previous prime is 2216662633. The next prime is 2216662649. The reversal of 2216662641 is 1462666122.

It is an interprime number because it is at equal distance from previous prime (2216662633) and next prime (2216662649).

It can be written as a sum of positive squares in only one way, i.e., 2216432241 + 230400 = 47079^2 + 480^2 .

It is not a de Polignac number, because 2216662641 - 2³ = 2216662633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2216662596 and 2216662605.

It is not an unprimeable number, because it can be changed into a prime (2216662649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123147916 + ... + 123147933.

Almost surely, 2^2216662641 is an apocalyptic number.

It is an amenable number.

2216662641 is a deficient number, since it is larger than the sum of its proper divisors (985183409).

2216662641 is a wasteful number, since it uses less digits than its factorization.

2216662641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246295855 (or 246295852 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2216662641 is about 47081.4468872825. The cubic root of 2216662641 is about 1303.8667203617.

The spelling of 2216662641 in words is "two billion, two hundred sixteen million, six hundred sixty-two thousand, six hundred forty-one".