7215206647 has 12 divisors (see below), whose sum is σ = 7934367168. Its totient is φ = 6556299200.

The previous prime is 7215206599. The next prime is 7215206689. The reversal of 7215206647 is 7466025127.

It is not a de Polignac number, because 7215206647 - 2⁷ = 7215206519 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 (7215206447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280122 + ... + 304792.

It is an arithmetic number, because the mean of its divisors is an integer number (661197264).

Almost surely, 2^7215206647 is an apocalyptic number.

7215206647 is a deficient number, since it is larger than the sum of its proper divisors (719160521).

7215206647 is a wasteful number, since it uses less digits than its factorization.

7215206647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27110 (or 27099 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 7215206647 is about 84942.3725063057. The cubic root of 7215206647 is about 1932.3372444122.

The spelling of 7215206647 in words is "seven billion, two hundred fifteen million, two hundred six thousand, six hundred forty-seven".