7066624221 has 8 divisors (see below), whose sum is σ = 10469072960. Its totient is φ = 4711082796.

The previous prime is 7066624207. The next prime is 7066624223. The reversal of 7066624221 is 1224266607.

It is not a de Polignac number, because 7066624221 - 2⁷ = 7066624093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7066624223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130863385 + ... + 130863438.

It is an arithmetic number, because the mean of its divisors is an integer number (1308634120).

Almost surely, 2^7066624221 is an apocalyptic number.

It is an amenable number.

7066624221 is a deficient number, since it is larger than the sum of its proper divisors (3402448739).

7066624221 is a wasteful number, since it uses less digits than its factorization.

7066624221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261726832 (or 261726826 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 7066624221 is about 84063.2156237197. The cubic root of 7066624221 is about 1918.9809607058.

The spelling of 7066624221 in words is "seven billion, sixty-six million, six hundred twenty-four thousand, two hundred twenty-one".