2216655645 has 8 divisors (see below), whose sum is σ = 3546649056. Its totient is φ = 1182216336.

The previous prime is 2216655631. The next prime is 2216655673. The reversal of 2216655645 is 5465566122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2216655645 - 2¹⁰ = 2216654621 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2216655597 and 2216655606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73888507 + ... + 73888536.

It is an arithmetic number, because the mean of its divisors is an integer number (443331132).

Almost surely, 2^2216655645 is an apocalyptic number.

It is an amenable number.

2216655645 is a deficient number, since it is larger than the sum of its proper divisors (1329993411).

2216655645 is a wasteful number, since it uses less digits than its factorization.

2216655645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147777051.

The product of its digits is 432000, while the sum is 42.

The square root of 2216655645 is about 47081.3725904418. The cubic root of 2216655645 is about 1303.8653486508.

The spelling of 2216655645 in words is "two billion, two hundred sixteen million, six hundred fifty-five thousand, six hundred forty-five".