2216637 has 12 divisors (see below), whose sum is σ = 3223584. Its totient is φ = 1467720.

The previous prime is 2216629. The next prime is 2216653. The reversal of 2216637 is 7366122.

It is a happy number.

2216637 is a `hidden beast` number, since 2 + 21 + 6 + 637 = 666.

It is not a de Polignac number, because 2216637 - 2³ = 2216629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2216637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216657) 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, 712 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (268632).

2^2216637 is an apocalyptic number.

It is an amenable number.

2216637 is a deficient number, since it is larger than the sum of its proper divisors (1006947).

2216637 is a wasteful number, since it uses less digits than its factorization.

2216637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680 (or 1677 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 2216637 is about 1488.8374659445. The cubic root of 2216637 is about 130.3861692898.

The spelling of 2216637 in words is "two million, two hundred sixteen thousand, six hundred thirty-seven".